This document provides a case study analysis of the acoustic design of the Shantanand Auditorium located in Kuala Lumpur, Malaysia. It includes an introduction to the auditorium, literature review on acoustics topics, acoustic design analysis of the auditorium, calculations, and design suggestions. The analysis examines the auditorium's shape, seating arrangement, leveling of seats, sound reinforcement system, sound propagation, and use of materials to control sound reflection, diffusion, and noise intrusion. Suggestions are made to improve acoustic qualities such as creating a buffer zone and using different materials.
Auditorium: A Case Study on Acoustic Design Presentationjisunfoo
The Calvary Convention Centre (CCC) in Kuala Lumpur, Malaysia is a 5,000-seat, multi-purpose auditorium designed for both speeches and musical performances. Through the strategic use of materials and acoustic treatments, the CCC achieves a reverberation time of 0.9 seconds, making it suitable for its primary function as a speech-based venue. Absorptive materials like carpeting and upholstered seats help control reverberation, while the concave wall and ceiling shapes aid in concentrating sound toward the audience. The auditorium design and acoustic treatments demonstrate how spaces can be flexibly designed for different event needs through consideration of materials and room geometry.
Building Science 2 : A Case Study on Acoustic DesignNicole Foo
This document provides an introduction and methodology for conducting an acoustic analysis of the PJ Live Arts Centre auditorium in Malaysia. The objectives are to study the auditorium design and how acoustic elements affect quality, analyze architectural features that influence sound, and produce a report concluding the space's acoustic effectiveness. Measurement methods will include using a digital sound level meter to collect sound pressure level data to evaluate factors like reverberation time, sound intensity, and how well audiences can enjoy performances.
The document provides details from a case study conducted on an existing auditorium called Shah Auditorium in Delhi. It describes the auditorium's layout, dimensions, seating capacity, accessibility, fire safety features, and other design aspects. It also compares the auditorium's features to standard guidelines and requirements for auditorium design, such as recommended seating densities, exit widths, acoustical materials, and more. The case study findings are meant to help gain knowledge about typical auditorium requirements and design considerations.
acoustic and viewing angle analysis of an auditorium buildingSaleh Ahmed
The document discusses the design standards for an auditorium building. It provides details on the types of auditoriums, basic design considerations, acoustic standards, and typical auditorium components. It then analyzes the National Museum auditorium based on these standards. The analysis finds that the auditorium's shape, seating arrangement, stage design, and materials used are generally in line with standard auditorium design. However, some improvements could be made to the horizontal circulation and location of the sound control room.
This document provides a case study on the acoustics of the Experimental Theatre (E.T.) at the University of Malaya. It discusses the theatre's design, measuring equipment and methodology used, acoustical analysis, and design considerations. The E.T. was constructed in 1965 and designed with influences from Brutalist architecture. Measurements of the theatre were taken using equipment like a sound meter and laser distance meter. The analysis found the theatre has a shoebox/fan shape conducive to sound reflection. The seating and stage layout supports clear sound propagation, though some seats experience sound shadows. Sound reinforcement systems were installed to amplify sound across the large space.
Project 1 : Auditorium - A Case Study of Acoustic DesignBryan Yeoh
The document provides an analysis of the acoustic design of an auditorium (PJCC auditorium). It begins with an introduction to the site and technical drawings. It then reviews relevant acoustic concepts such as sound pressure level, sound reduction index, and reverberation time. It identifies existing sound sources in the auditorium like external noise, internal noise, and the sound reinforcement system. It discusses sound path principles and how they are applied in the auditorium design through elements like the balcony, walls, and raked floor. It also covers acoustic materials and calculations of absorption coefficients and reverberation time. The document aims to understand and explore the acoustic characteristics of the auditorium in order to analyze and suggest improvements to the acoustic qualities.
Auditorium: A Case Study on Acoustic Design Reportjisunfoo
The document discusses various acoustical phenomena relevant to auditorium design including:
1. Reverberation, which is the collection of reflected sounds in an enclosed space like an auditorium. Reverberation time is used to characterize it.
2. Attenuation, which is the loss of sound energy through scattering and absorption as sound waves interact with surfaces.
3. Echoes and flutter echoes, which are distinct reflected sounds that can degrade audio quality if not properly controlled through design.
4. Sound intensity and sound pressure, which are measures of sound energy levels important for human perception of sound.
The document examines these phenomena to understand how acoustic design of spaces like auditoriums can optimize
Auditorium: A Case Study on Acoustic Design Presentationjisunfoo
The Calvary Convention Centre (CCC) in Kuala Lumpur, Malaysia is a 5,000-seat, multi-purpose auditorium designed for both speeches and musical performances. Through the strategic use of materials and acoustic treatments, the CCC achieves a reverberation time of 0.9 seconds, making it suitable for its primary function as a speech-based venue. Absorptive materials like carpeting and upholstered seats help control reverberation, while the concave wall and ceiling shapes aid in concentrating sound toward the audience. The auditorium design and acoustic treatments demonstrate how spaces can be flexibly designed for different event needs through consideration of materials and room geometry.
Building Science 2 : A Case Study on Acoustic DesignNicole Foo
This document provides an introduction and methodology for conducting an acoustic analysis of the PJ Live Arts Centre auditorium in Malaysia. The objectives are to study the auditorium design and how acoustic elements affect quality, analyze architectural features that influence sound, and produce a report concluding the space's acoustic effectiveness. Measurement methods will include using a digital sound level meter to collect sound pressure level data to evaluate factors like reverberation time, sound intensity, and how well audiences can enjoy performances.
The document provides details from a case study conducted on an existing auditorium called Shah Auditorium in Delhi. It describes the auditorium's layout, dimensions, seating capacity, accessibility, fire safety features, and other design aspects. It also compares the auditorium's features to standard guidelines and requirements for auditorium design, such as recommended seating densities, exit widths, acoustical materials, and more. The case study findings are meant to help gain knowledge about typical auditorium requirements and design considerations.
acoustic and viewing angle analysis of an auditorium buildingSaleh Ahmed
The document discusses the design standards for an auditorium building. It provides details on the types of auditoriums, basic design considerations, acoustic standards, and typical auditorium components. It then analyzes the National Museum auditorium based on these standards. The analysis finds that the auditorium's shape, seating arrangement, stage design, and materials used are generally in line with standard auditorium design. However, some improvements could be made to the horizontal circulation and location of the sound control room.
This document provides a case study on the acoustics of the Experimental Theatre (E.T.) at the University of Malaya. It discusses the theatre's design, measuring equipment and methodology used, acoustical analysis, and design considerations. The E.T. was constructed in 1965 and designed with influences from Brutalist architecture. Measurements of the theatre were taken using equipment like a sound meter and laser distance meter. The analysis found the theatre has a shoebox/fan shape conducive to sound reflection. The seating and stage layout supports clear sound propagation, though some seats experience sound shadows. Sound reinforcement systems were installed to amplify sound across the large space.
Project 1 : Auditorium - A Case Study of Acoustic DesignBryan Yeoh
The document provides an analysis of the acoustic design of an auditorium (PJCC auditorium). It begins with an introduction to the site and technical drawings. It then reviews relevant acoustic concepts such as sound pressure level, sound reduction index, and reverberation time. It identifies existing sound sources in the auditorium like external noise, internal noise, and the sound reinforcement system. It discusses sound path principles and how they are applied in the auditorium design through elements like the balcony, walls, and raked floor. It also covers acoustic materials and calculations of absorption coefficients and reverberation time. The document aims to understand and explore the acoustic characteristics of the auditorium in order to analyze and suggest improvements to the acoustic qualities.
Auditorium: A Case Study on Acoustic Design Reportjisunfoo
The document discusses various acoustical phenomena relevant to auditorium design including:
1. Reverberation, which is the collection of reflected sounds in an enclosed space like an auditorium. Reverberation time is used to characterize it.
2. Attenuation, which is the loss of sound energy through scattering and absorption as sound waves interact with surfaces.
3. Echoes and flutter echoes, which are distinct reflected sounds that can degrade audio quality if not properly controlled through design.
4. Sound intensity and sound pressure, which are measures of sound energy levels important for human perception of sound.
The document examines these phenomena to understand how acoustic design of spaces like auditoriums can optimize
The Kresge Auditorium at MIT is defined by an elegant thin concrete dome structure, one-eighth of a sphere reaching 15.24m high. It has a capacity of 1,226 people and was an innovative use of thin-shell concrete technology when built in 1955. The dome rests on just three points and was originally covered with limestone mixed polymer but is now clad in copper. It provides the main space for concerts, lectures and events at MIT.
Auditorium : SHANTANAND Temple of Fine Art Case StudyQuinn Liew
An auditorium is a special room built to enable an audience to hear and watch performances at venues such
as theatres and music halls. For movie theatres, the number of auditoriums is expressed as the number
of screens. Auditorium can be found in entertainment venues, community halls, and theatres, and may be
used for rehearsal, presentation, performing arts productions. Apart from entertainment, an auditorium also
used for a space for speech delivery such as lecture theatres. A successful design of auditoriums muchly
depend on its acoustic design which include the auditorium layout plus absorption materials used. It is
essential to preserve and enhance the desired sound and to eliminate noise and undesired sound.
The document discusses an acoustic case study of the PJ Live Arts Centre auditorium. It provides background information on the auditorium such as its location, capacity, and history. The methodology section describes the tools used for data collection including a sound level meter, cameras, and measuring tape. An analysis of the auditorium design identifies factors like its rectangular shape, raked seating, and ceiling reflector panels. Sources of indoor and outdoor noise are also examined.
1. The document analyzes the acoustic design of the Cempaka Sari Auditorium located in Putrajaya, Malaysia, which has a total volume of 19,000m3 and seats 610 people.
2. Key aspects of the acoustic design discussed include the auditorium layout, sound absorption materials used, and analysis of sound propagation and related phenomena such as concentration, reflection, and reverberation time.
3. The analysis finds that while the auditorium has an optimum reverberation time of 1.88 seconds, some improvements could be made to absorption materials and reduce internal noise sources.
Acoustic Analysis on Permata Pintar Auditorium (presentation)Carmen Chan
The auditorium was designed to distribute sound evenly throughout the seating areas. Several design elements help achieve this:
1. The fan-shaped layout and minimal 16.5 degree splay angle between rows allows sound to propagate equally without flutter echoes.
2. CMU block walls and a suspended forestage canopy reflect and diffuse sound to reinforce direct sound within 30ms of delay.
3. Measurements found sound intensity levels varied minimally except for areas under the deep gallery, which experience sound shadows due to obstruction of indirect sound waves.
Auditorium : SHANTANAND Temple of Fine Art Case Study PresentationQuinn Liew
The document provides details about the Shantanand Auditorium located in Brickfields, Kuala Lumpur. It summarizes that the auditorium is the main center for learning classical Indian music in the area, can accommodate up to 618 people, and has a total volume of 8769 cubic meters. Acoustic analyses were performed and found that while the space is suitable for musical and dance performances, modifications could improve the acoustics, such as adding a buffer zone at the entrance, changing materials for better sound absorption, altering the balcony design, and tilting the ceiling.
a case study of acoustic design presentationYen Min Khor
The document analyzes the acoustic design of the Connexion@Nexus auditorium. It finds that while the auditorium avoids echoes allowing speech to be easily discerned, it has a reverberation time that is too short at 0.26 seconds. The overly absorbent materials used throughout also reduce reflected sound, contributing to the suboptimal reverberation time. Additionally, the auditorium exhibits other acoustic defects like flutter echoes on stage and inefficient ceiling reflectors. Based on this analysis, the objective of determining if Connexion@Nexus is a good design for its intended multi-purpose use is answered with a no.
The document provides an acoustic analysis of the Damansara Utama Methodist Church auditorium in Petaling Jaya, Malaysia. It describes the auditorium's design including its fan-shaped seating arrangement, concave ceiling, and three tiered seating levels. It analyzes how these design elements help distribute sound evenly to audiences. The document also examines the acoustic materials used, including carpeted floors, acoustic foam panels, and sound-absorbing curtains. Measurements of sound intensity at various distances from the sound source are included.
The document provides details about the National Centre for the Performing Arts (NCPA) located in Mumbai, India. It was established in 1959 and designed by architects Philip Johnson and Patel Batliwala. The center has multiple theaters including the 1010-seat Tata Theater, which opened in 1982 and was designed with special acoustic treatments in the walls and ceiling to evenly distribute sound. It also has areas for performances, administration, teaching, galleries, and amenities.
1. The Solaris and Leisure Centre is a new performing arts complex in Tallinn, Estonia that includes a multifunctional auditorium.
2. Key aspects of the auditorium design include its acoustics, which were informed by an acoustical consultant. Materials with high sound absorption values were selected to regulate reverberation time.
3. The primary sound reinforcement system anchors twin arrays of line array loudspeakers to left and right of the stage, with an overhead array to provide clarity for both music and spoken performances.
DEGREE SEM 5 BUILDING SCIENCE PROJECT 01 ACOUSTIC CASE STUDYjolynnTJL
This document provides a case study on the acoustic design of the Majlis Bandaraya Shah Alam auditorium. It begins with an introduction to acoustic design and the project brief. It then reviews concepts of sound reflection, absorption, direct and indirect sound paths, and reverberation time. The document describes the site, including drawings of the auditorium layout and typical uses. It analyzes existing sound sources such as the surround sound system. It also evaluates noise sources and control methods. The document aims to study how material properties and design features impact the auditorium's acoustics.
The document provides background information on a case study of the Wisma MBSA Auditorium Hall in Shah Alam, Malaysia. The objectives of the case study are to understand how auditorium design can influence sound quality, materials used to enhance acoustics, and to produce an analysis report. The auditorium was built in the 1980s and has a capacity of 1400 people. Floor plans, sections and photos of the auditorium are presented. Acoustic concepts like reverberation, sound absorption, and sound propagation are discussed. Methodology details measuring sound levels and documenting the auditorium. The analysis examines the auditorium's sound reinforcement system, speakers and advantages/disadvantages of the system. Sound propagation readings in the
This document discusses the historical aspects of acoustics in ancient open-air theaters and churches. It notes that while the Greeks and Romans may have attempted to solve line-of-sight problems, they likely obtained reasonable hearing conditions as well by shaping steeply banked seating areas in a semi-circle near the performance space. Later, the Romans built large roofs and side reflectors that provided satisfactory intelligibility in remote seats. Examples of ancient open-air theaters with good acoustics, such as the one from 50 AD in Orange, France, are described. The first written mention of architectural acoustics was by Vitruvius, though no remains of the "sounding vases" he described have been found
Shanmukhananda Hall is located in Mumbai, India. It was constructed between 1960-1963 and inaugurated in 1963. The hall can seat up to 2763 people across three floors and has a stage, green rooms, and other facilities. In 1990, a fire damaged parts of the hall but it was later renovated. The hall uses traditional Indian temple architecture and has facilities for performances, school functions, and other events.
This document provides an overview of auditorium design considerations including definitions, history, types of auditoriums, terms used, seating arrangements, size and shape factors, stage and wall properties, fire protection, ventilation, and sound insulation. It discusses design principles for site selection, volume, visibility, accessibility, acoustics and various technical systems required in an auditorium.
Auditorium Literature Study & Design ConsiderationsVartika Sharma
The presentation includes basic fundamentals to keep in mind while designing an Auditorium.
Source:
• National Building Code (NBC),
• Time Saver Standards-Building Types (TSS),
• Neufert
• IS Code - is.2526.1963
This document discusses interior acoustics in convention halls. It begins by defining a convention hall and acoustics. Good acoustics in convention halls require a low ambient noise level, acoustic gain, and appropriate reverberation time. Conditions for good acoustics include avoiding strong echoes and focusing of sound, providing intimacy and clarity, and reducing sounds and vibrations. The document then discusses various acoustic elements used in convention halls like sound absorbers, diffusers, foam panels, acoustic walls, reflectors, baffles, and banners to improve acoustics by reducing reverberation and echoes.
This document provides a case study analysis of the acoustic design of Shantanand Auditorium located in Kuala Lumpur, Malaysia. It begins with an introduction to the auditorium including its background, history, photos and drawings. It then discusses concepts in acoustic and architecture such as sound intensity level, reverberation, attenuation, echoes and sound shadows. The document aims to analyze the auditorium's acoustic design and treatments and provide suggestions to improve its acoustic qualities.
This document provides a case study analysis of the acoustic design of Shantanand Auditorium located in Kuala Lumpur, Malaysia. It begins with an introduction to the auditorium including its background, history, photos and drawings. It then discusses acoustic concepts relevant to architectural design such as sound absorption, reverberation time, attenuation and echoes. The document aims to analyze key acoustic design aspects of the auditorium and provide suggestions to improve its acoustic qualities.
The Kresge Auditorium at MIT is defined by an elegant thin concrete dome structure, one-eighth of a sphere reaching 15.24m high. It has a capacity of 1,226 people and was an innovative use of thin-shell concrete technology when built in 1955. The dome rests on just three points and was originally covered with limestone mixed polymer but is now clad in copper. It provides the main space for concerts, lectures and events at MIT.
Auditorium : SHANTANAND Temple of Fine Art Case StudyQuinn Liew
An auditorium is a special room built to enable an audience to hear and watch performances at venues such
as theatres and music halls. For movie theatres, the number of auditoriums is expressed as the number
of screens. Auditorium can be found in entertainment venues, community halls, and theatres, and may be
used for rehearsal, presentation, performing arts productions. Apart from entertainment, an auditorium also
used for a space for speech delivery such as lecture theatres. A successful design of auditoriums muchly
depend on its acoustic design which include the auditorium layout plus absorption materials used. It is
essential to preserve and enhance the desired sound and to eliminate noise and undesired sound.
The document discusses an acoustic case study of the PJ Live Arts Centre auditorium. It provides background information on the auditorium such as its location, capacity, and history. The methodology section describes the tools used for data collection including a sound level meter, cameras, and measuring tape. An analysis of the auditorium design identifies factors like its rectangular shape, raked seating, and ceiling reflector panels. Sources of indoor and outdoor noise are also examined.
1. The document analyzes the acoustic design of the Cempaka Sari Auditorium located in Putrajaya, Malaysia, which has a total volume of 19,000m3 and seats 610 people.
2. Key aspects of the acoustic design discussed include the auditorium layout, sound absorption materials used, and analysis of sound propagation and related phenomena such as concentration, reflection, and reverberation time.
3. The analysis finds that while the auditorium has an optimum reverberation time of 1.88 seconds, some improvements could be made to absorption materials and reduce internal noise sources.
Acoustic Analysis on Permata Pintar Auditorium (presentation)Carmen Chan
The auditorium was designed to distribute sound evenly throughout the seating areas. Several design elements help achieve this:
1. The fan-shaped layout and minimal 16.5 degree splay angle between rows allows sound to propagate equally without flutter echoes.
2. CMU block walls and a suspended forestage canopy reflect and diffuse sound to reinforce direct sound within 30ms of delay.
3. Measurements found sound intensity levels varied minimally except for areas under the deep gallery, which experience sound shadows due to obstruction of indirect sound waves.
Auditorium : SHANTANAND Temple of Fine Art Case Study PresentationQuinn Liew
The document provides details about the Shantanand Auditorium located in Brickfields, Kuala Lumpur. It summarizes that the auditorium is the main center for learning classical Indian music in the area, can accommodate up to 618 people, and has a total volume of 8769 cubic meters. Acoustic analyses were performed and found that while the space is suitable for musical and dance performances, modifications could improve the acoustics, such as adding a buffer zone at the entrance, changing materials for better sound absorption, altering the balcony design, and tilting the ceiling.
a case study of acoustic design presentationYen Min Khor
The document analyzes the acoustic design of the Connexion@Nexus auditorium. It finds that while the auditorium avoids echoes allowing speech to be easily discerned, it has a reverberation time that is too short at 0.26 seconds. The overly absorbent materials used throughout also reduce reflected sound, contributing to the suboptimal reverberation time. Additionally, the auditorium exhibits other acoustic defects like flutter echoes on stage and inefficient ceiling reflectors. Based on this analysis, the objective of determining if Connexion@Nexus is a good design for its intended multi-purpose use is answered with a no.
The document provides an acoustic analysis of the Damansara Utama Methodist Church auditorium in Petaling Jaya, Malaysia. It describes the auditorium's design including its fan-shaped seating arrangement, concave ceiling, and three tiered seating levels. It analyzes how these design elements help distribute sound evenly to audiences. The document also examines the acoustic materials used, including carpeted floors, acoustic foam panels, and sound-absorbing curtains. Measurements of sound intensity at various distances from the sound source are included.
The document provides details about the National Centre for the Performing Arts (NCPA) located in Mumbai, India. It was established in 1959 and designed by architects Philip Johnson and Patel Batliwala. The center has multiple theaters including the 1010-seat Tata Theater, which opened in 1982 and was designed with special acoustic treatments in the walls and ceiling to evenly distribute sound. It also has areas for performances, administration, teaching, galleries, and amenities.
1. The Solaris and Leisure Centre is a new performing arts complex in Tallinn, Estonia that includes a multifunctional auditorium.
2. Key aspects of the auditorium design include its acoustics, which were informed by an acoustical consultant. Materials with high sound absorption values were selected to regulate reverberation time.
3. The primary sound reinforcement system anchors twin arrays of line array loudspeakers to left and right of the stage, with an overhead array to provide clarity for both music and spoken performances.
DEGREE SEM 5 BUILDING SCIENCE PROJECT 01 ACOUSTIC CASE STUDYjolynnTJL
This document provides a case study on the acoustic design of the Majlis Bandaraya Shah Alam auditorium. It begins with an introduction to acoustic design and the project brief. It then reviews concepts of sound reflection, absorption, direct and indirect sound paths, and reverberation time. The document describes the site, including drawings of the auditorium layout and typical uses. It analyzes existing sound sources such as the surround sound system. It also evaluates noise sources and control methods. The document aims to study how material properties and design features impact the auditorium's acoustics.
The document provides background information on a case study of the Wisma MBSA Auditorium Hall in Shah Alam, Malaysia. The objectives of the case study are to understand how auditorium design can influence sound quality, materials used to enhance acoustics, and to produce an analysis report. The auditorium was built in the 1980s and has a capacity of 1400 people. Floor plans, sections and photos of the auditorium are presented. Acoustic concepts like reverberation, sound absorption, and sound propagation are discussed. Methodology details measuring sound levels and documenting the auditorium. The analysis examines the auditorium's sound reinforcement system, speakers and advantages/disadvantages of the system. Sound propagation readings in the
This document discusses the historical aspects of acoustics in ancient open-air theaters and churches. It notes that while the Greeks and Romans may have attempted to solve line-of-sight problems, they likely obtained reasonable hearing conditions as well by shaping steeply banked seating areas in a semi-circle near the performance space. Later, the Romans built large roofs and side reflectors that provided satisfactory intelligibility in remote seats. Examples of ancient open-air theaters with good acoustics, such as the one from 50 AD in Orange, France, are described. The first written mention of architectural acoustics was by Vitruvius, though no remains of the "sounding vases" he described have been found
Shanmukhananda Hall is located in Mumbai, India. It was constructed between 1960-1963 and inaugurated in 1963. The hall can seat up to 2763 people across three floors and has a stage, green rooms, and other facilities. In 1990, a fire damaged parts of the hall but it was later renovated. The hall uses traditional Indian temple architecture and has facilities for performances, school functions, and other events.
This document provides an overview of auditorium design considerations including definitions, history, types of auditoriums, terms used, seating arrangements, size and shape factors, stage and wall properties, fire protection, ventilation, and sound insulation. It discusses design principles for site selection, volume, visibility, accessibility, acoustics and various technical systems required in an auditorium.
Auditorium Literature Study & Design ConsiderationsVartika Sharma
The presentation includes basic fundamentals to keep in mind while designing an Auditorium.
Source:
• National Building Code (NBC),
• Time Saver Standards-Building Types (TSS),
• Neufert
• IS Code - is.2526.1963
This document discusses interior acoustics in convention halls. It begins by defining a convention hall and acoustics. Good acoustics in convention halls require a low ambient noise level, acoustic gain, and appropriate reverberation time. Conditions for good acoustics include avoiding strong echoes and focusing of sound, providing intimacy and clarity, and reducing sounds and vibrations. The document then discusses various acoustic elements used in convention halls like sound absorbers, diffusers, foam panels, acoustic walls, reflectors, baffles, and banners to improve acoustics by reducing reverberation and echoes.
This document provides a case study analysis of the acoustic design of Shantanand Auditorium located in Kuala Lumpur, Malaysia. It begins with an introduction to the auditorium including its background, history, photos and drawings. It then discusses concepts in acoustic and architecture such as sound intensity level, reverberation, attenuation, echoes and sound shadows. The document aims to analyze the auditorium's acoustic design and treatments and provide suggestions to improve its acoustic qualities.
This document provides a case study analysis of the acoustic design of Shantanand Auditorium located in Kuala Lumpur, Malaysia. It begins with an introduction to the auditorium including its background, history, photos and drawings. It then discusses acoustic concepts relevant to architectural design such as sound absorption, reverberation time, attenuation and echoes. The document aims to analyze key acoustic design aspects of the auditorium and provide suggestions to improve its acoustic qualities.
This document provides a case study analysis of the acoustic design of Shantanand Auditorium located in Kuala Lumpur, Malaysia. It begins with an introduction to the auditorium including its background, history, photos and drawings. It then discusses acoustic concepts relevant to architectural design such as sound absorption, reverberation time, attenuation and echoes. The document aims to analyze key acoustic design aspects of the auditorium and provide suggestions to improve its acoustic qualities.
The document provides details on a case study of the acoustic design of the Damansara Performing Arts Centre auditorium in Malaysia. It includes the auditorium layout plans, an introduction to acoustic phenomena like absorption, reflection and reverberation. It also discusses key considerations for acoustic design in auditoriums such as volume, seating arrangement and use of sound absorbers. Methodology details the equipment used like a sound level meter to collect acoustic data and analyze design aspects like shape and seating layout that could impact sound propagation.
The document provides details on a case study of the acoustic design of the Damansara Performing Arts Centre auditorium in Malaysia. It includes the auditorium layout plans, an introduction to acoustic phenomena like absorption, reflection and reverberation. It also discusses key considerations for acoustic design in auditoriums such as volume, seating arrangement and use of sound absorbers. Methodology details the equipment used like a sound level meter to collect acoustic data and analyze design aspects like shape and seating layout that impact the auditorium's acoustics.
This document provides information on a case study conducted on the acoustic design of the Damansara Performing Arts Centre theatre in Malaysia. It includes floor plans, sections and elevation of the theatre space. The objectives of the study are to analyze the acoustic characteristics of the auditorium, determine the sound absorption properties of existing materials, and analyze acoustic qualities to suggest improvements. Literature on acoustic fundamentals is reviewed covering sound wave properties, reflection, diffusion, and absorption. Site visits were conducted and acoustic measurements were taken to understand the existing acoustic conditions and identify sound sources.
This document provides details on a case study conducted on the acoustic design of the theatre at the Damansara Performing Arts Centre (DPAC) in Kuala Lumpur, Malaysia. The study involved collecting acoustic data through site visits and measurements, analyzing how sound behaves in the space, and evaluating solutions to improve the room acoustics. Key findings include the identification of noise sources near the site, the contribution of acoustic doors and air conditioning placement to reducing external sound, and analysis of sound absorption, reflection, diffusion and reverberation times in the theatre. The document presents technical drawings, photographs to support the research methodology and findings on the acoustic characteristics and performance of the theatre space.
The document provides a case study analysis of the acoustic design of the Connexion@Nexus auditorium located in Bangsar South City, Kuala Lumpur, Malaysia. It begins with an introduction that outlines the aims, objectives, and background of the auditorium. The document then discusses acoustic phenomena such as sound intensity levels, reverberation, attenuation, and echoes. It also analyzes the acoustic design of auditoriums in general. The document presents the methodology used to study the Connexion@Nexus auditorium. It includes an acoustic analysis of the auditorium's design, materials, sound sources, and sound propagation. Diagrams and photographs are also included.
THE ACOUSTIC DESIGN OF CONNEXION@NEXUSYen Min Khor
The document provides a case study analysis of the acoustic design of the Connexion@Nexus auditorium located in Bangsar South City, Kuala Lumpur, Malaysia. It begins with an introduction that outlines the aims, objectives, and background of the auditorium. The document then discusses acoustic phenomena such as sound intensity levels, reverberation, attenuation, and echoes. It also analyzes the acoustic design considerations for an auditorium. The methodology section describes the equipment used to collect acoustic data. Finally, the acoustic analysis section evaluates the auditorium design and materials based on measurements and observations taken at the site.
The document provides information on a case study conducted on the acoustic design of Damansara Performing Arts Centre's theatre in Kuala Lumpur, Malaysia. It includes floor plans, sections, and elevations of the theatre space. The literature review covers basic acoustic concepts such as sound waves, reflection, absorption, diffusion, and reverberation time. Site visits were conducted and acoustic measurements were taken to analyze the existing sound conditions. The data collected will be used to evaluate the acoustic qualities of the space and provide recommendations to improve areas such as sound reflection, absorption, diffusion, and reverberation time.
The document provides information on a case study conducted on the acoustic design of Damansara Performing Arts Centre's theatre in Kuala Lumpur, Malaysia. It includes floor plans, sections and photographs of the theatre along with a literature review on acoustic fundamentals. The literature review covers the properties of sound as longitudinal waves, factors that affect the human perception of sound like wavelength and frequency. It also discusses key acoustic concepts like sound reflection, absorption, diffusion, echo and reverberation times that are important for room acoustics design. Site visits were conducted and acoustic data was collected through measurements and interviews to analyse the theatre's acoustic performance and identify ways to improve it.
This document provides details of a case study on the acoustic design of the Cempaka Sari Auditorium in Putrajaya, Malaysia. It includes an introduction outlining the objectives of studying the auditorium's acoustics. The document then covers acoustic theory relevant to auditorium design. The methodology section describes the equipment and methods used to collect acoustic data from the site, including sound level meters, measuring devices, and sound equipment in the auditorium. Finally, the document presents preliminary acoustic analysis of the auditorium and outlines recommendations and conclusions.
This document provides details of a case study on the acoustic design of the Cempaka Sari Auditorium in Putrajaya, Malaysia. It includes an introduction outlining the aims, objectives, and background of the auditorium. The methodology section describes the equipment used to collect acoustic data during site visits, including sound level meters, measuring devices, and cameras. Acoustic theory is discussed around topics like sound intensity, reverberation, attenuation, and design considerations for auditoriums. Drawings of the auditorium plans and sections are also provided.
The document provides details on a case study of the acoustic design of the Kuala Lumpur Performing Art Center auditorium. It includes an introduction to the site and objectives of the study. Plans and sections of the auditorium are shown. The methodology section outlines the equipment used to collect data on site, including measurements of dimensions and sound level readings. An analysis of the auditorium design discusses aspects like its rectangular shape, inclined seating layout, and fan-shaped seating arrangement. Acoustic properties of the materials used and sound propagation phenomena are also examined.
1. The document presents an acoustic design analysis of the auditorium at Damansara Performing Arts Centre in Malaysia. It examines the centre's sound reinforcement system, sound concentration, reflection, and attenuation qualities.
2. The auditorium utilizes various speakers including passive subwoofers, 2-way full range cabinet speakers, and in-wall speakers to produce sound. Measurements and analysis of sound levels and distribution were conducted to understand the acoustic performance.
3. Factors like sound absorption materials, structural wall surfaces, and reflectors are discussed in relation to how they influence sound reflection and concentration in the auditorium. Calculations of sound delay and reverberation times are also provided.
The document is a case study report on the acoustic design of an auditorium. It provides background information on the selected site, Istana Budaya in Kuala Lumpur, including its history and architectural plans. It then discusses acoustic concepts such as sound absorption, reflection, and reverberation time. Material properties and their absorption coefficients are analyzed. The report also includes a case study comparison of Istana Budaya to the Elbe Philharmonic Hall in Germany. The summary provides an overview of the key information and analysis presented in the acoustic design case study report.
The document provides an analysis of the acoustic design of the Damansara Performing Arts Centre auditorium. It examines the sound sources, propagation, construction materials, and potential defects. Regarding propagation, it analyzes sound reflection, diffusion, diffraction, delay, and shadowing. Suspended reflective panels help distribute sound more evenly to audiences. Different construction materials and the auditorium's irregular geometry contribute to diffusion. Calculations show effective reflection for most seating but potential echoes in some back areas.
The document provides details of a case study conducted by students on the acoustic design of an auditorium in Malaysia called Istana Budaya. It includes an introduction to the site, literature review on acoustic topics, analysis of materials used and their acoustic properties, and comparisons to another auditorium. The students visited Istana Budaya to document its history, layout, materials, and acoustic characteristics. They analyzed the suitability of sound absorption methods and materials used to identify ways to improve the auditorium's acoustic performance.
The document is a case study report on the acoustic design of an auditorium. It provides background information on the selected site, Istana Budaya in Kuala Lumpur, including its history and architectural features. It then discusses acoustic concepts like reverberation time, sound absorption and diffusion. Material properties that influence acoustics like wall, ceiling and floor materials are analyzed. The report also includes a case study comparison of Istana Budaya to the Elbe Philharmonic Hall in Germany. In conclusion, the document analyzes the acoustic performance of Istana Budaya and identifies opportunities for improvement.
The document presents an analysis of the acoustic design of the Auditorium Cempaka Sari in Putrajaya, Malaysia, including its architectural design, materials used, acoustic phenomena, and measurements taken of sound levels within the auditorium. It describes the auditorium's shape, volume, seating and stage configuration, and finishes used to achieve the desired reverberation time. Methodologies for data collection including equipment used are also outlined.
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1. SCHOOL OF ARCHITECTURE, BUILDING AND DESIGN
BACHELOR OF SCIENCE (HONS) IN ARCHITECTURE
Prepared by:
Melvyn Poh Ern Meng 0322653
Brian Koh Jun Yan 0322002
Hong Shi Lik 0322081
Kiu Ngin Pern 0322084
Muhammad A’ameer 0322891
Saw E Sean 0322003
Nhat Dinh 0313309
Chan Jing Jun 0326762
Tutor: Ar. Edwin Chan
Building Science ll [BLD 61303]
Project 1
Case Study on Acoustic Design
1
2. TABLE OF CONTENT
1 Introduction of Shantanand Auditorium 3
1.1 Aim and Objectives 4
1.2 Site background 4
1.3 Historical Background 5
1.4 Sense of Place 6-7
1.5 Architectural Drawings 8-9
1.6 Auditorium design analysis 10-11
2 Acoustics and Architecture 12
2.1 Literature Review 13-14
2.1.1 Acoustics in Architecture
2.1.2 Sound Intensity Level
2.1.3 Reverberation, Attenuation, Echos and Sound Shadow
2.2 Methodology 15-16
3 Acoustic Design Analysis 17
3.1 Sound reinforcement system 18-24
3.2 Sound propagation and concentration 25-26
3.3 Sound Shadow 27
3.4 Sound reflection and diffusion 28-30
3.5 Flutter echoes and sound delay 31-32
3.6 Noise intrusion (Noise source) 33-45
3.7 Construction of materials 46-52
4 Calculations 53
4.1 Area of floor 54
4.2 Area of wall 55
4.3 Area of other material 56
4.4 Reverberation Time 57
5 Design Solution and Suggestion 58
5.1 Create a buffer zone 59
5.2 Materiality for doors and walls in the buffer zone 60
5.3 Increase the reverberation time in the auditorium 61
5.4 Shaping a concave shape at the balcony parapet 62
5.5 Increase the balcony height and tited ceiling 63
6 Conclusion 64-65
7 Reference Link 66-69
8 Peer Evaluation Form 70-78
2
4. 1.1 Aims & Objective
In this projects objectives and aims are :
1. To produce an in-depth acoustic design analysis of our chosen auditorium and the effectiveness that
contribute to the acoustic quality of Shantanand auditorium.
2. To study and analyse the characteristics of acoustic auditorium and suggest ways to improve the
acoustic qualities with the space.
3. To generate documentation report based on the researched datas and on-site analysis is that are able
to show the relationship between acoustical design with space.
1.2 Site Background
Name - Shantanand auditorium
Location - 114-116, Jalan Berhala,
Brickfields, Kuala Lumpur
Type Of Auditorium - Community
Auditorium
Year of Completion - 2011
Total Volume - 4312
Total Seats - 618
Temple of Fine Arts in Kuala Lumpur is famous for being the main centre for learning classical
Indian music in Malaysia. Located at Brickfields also known as “Little India” of Kuala Lumpur. The
building is well known as the cultural performance stage of Shantan auditorium. The auditorium has
fulfilled the needs of acoustical design an treatment without significant live and dead spots. Thus is able
to provide the best sound quality throughout the whole auditorium. The purpose of this auditorium are
for musical production such as, dance drama, musical vocals, acting and etc.. The hall itself has an area
of 8796 sqm. It can accommodate a total of 618 people within the main hall and the first floor balcony.
Figure 1.2.1 Key Plan showing location of Temple of Fine Arts in Brickfields.
The temple of Fine Arts location is surrounded by apartments, religious buildings as well as a
cemetary across the river. This makes the overall noise level of the site very quiet thus the auditorium is
not disturbed by exterior noise pollutions.
4
5. Figure 1.2.2 : 5-storey building “Temple of Fine Arts” at Jalan Brickfields
1.3 History Background
The founder of the Temple of Arts, Swami Shantanand Sawaswathi, wanted to provide a
centre for the Malaysian Youth to show their love towards cultural, artistic and spiritual wealth. His
hope was to create an avenue possible for cross-cultural interactions for the many races of Malaysia.
The auditorium was named after Swamiji signifying the presence and guidance of his Holiness Swami.
The auditorium also name the “Heartspace for Creating Expression” was to promote the beauty of
Indian arts and performances that allows the younger generation to appreciate. In 2011 the “Temple
Of Fine Arts” finished construction and launched with the Prime Minister on the 4th of July 2011.
Figure 1.3.1 : Shantanand auditorium prime choice venue for performing arts.
5
6. 1.4 Sense of Place
Figure 1.4.1 Stage curtains give a sense of mystery and
curiosity to the coming performance for the audience
Figure 1.4.2. Stage in auditorium is made of timber with
rubber finishing giving it an organic feel to it
Figure 1.4.3. Auditorium has a sense of harmony from the
color of walls to seating to the use of lighting
Figure 1.4.4. Shantanand auditorium portrays a sense of
classical elegance through lighting
6
7. Figure 1.4.5 Behind stage control room Figure 1.4.6 Second Floor balcony seating
Figure 1.4.7 Backstage equipment and storage area. Figure 1.4.8 View from scaffolding seeing seating area of
auditorium
Figure 1.4.9 Lighting scaffolding walkway for maintenance
workers and technicians
Figure 1.4.10 Backstage view out into auditorium during
rehearsal
7
10. 1.6 Auditorium Design Analysis
Figure 1.6. 2 Figure above shows the efficiency of seats arrangement in aspect dimension and position
Shape and massing
The shape of the auditorium is a mixture of rectangular and shoe-box design whereby the stage
is located at the narrower section of the auditorium. The seats located under the upper balcony
experience sound shadow, an occurrence when sound does not reach as effectively as it should.
Arrangement of seats
Figure 1.6.1 Figure above shows second floor plan which the sound shadow was right under it and the
shape of auditorium.
The arrangement plan of seats in Shantanand was done in a way where sound is transmitted all
throughout the auditorium. The distance between the sound source from the stage and the back seats
are within the scope of 15.2m, an ideal range for the human voice to be heard clearly. Other than that,
the auditorium seats are placed within 140 degree of sound projection. This permits the obervation of
high recurrence sounds. The line of the seats along the edge of the auditorium are oriented towards the
stage to provide proper views as well as acoustical thought as the sound travels in a circular order.
10
11. Figure 1.6.4 Figure above show the seating area seats arrangement is elevated
Leveling of seats
To ensure that the sound waves are properly distributed throughout the auditorium as well as the
assurance of unobstructed views, the seats were designed to be sloped.
In the case where the seats are arranged in a single level, sound waves travelling to the
furthermost seat would be disrupted as it would have to pass through several absorbers such as
padded seats and individuals.
Figure 1.6.3 Figure above show the seating area seats are arranged in single level
By raising the level of seats, the audience would be able to receive direct sound without obstruction
from absorbers.
11
13. 2.1 Literature Review
2.1.1 Acoustic In Architecture
Acoustics is defined as the science behind the production,reception and effects of sound.
Sound can be defined as vibrations that travel through mediums such as gas, liquids and solids and
return back to the initial point from deflection.
Sound can be reflected, absorbed, transmitted and diffracted. A sound wave is a longitudinal
wave where particles of the medium are temporarily displaced in a direction parallel to the energy
travelling and returned to its original position. The vibration in a medium produces alternative waves of
relatively dense and sparse particles which are called compression and rarefaction respectively.
Acoustics in the built environment is normally evaluated on noise curve and reverberation time
(RT). By employing sound absorption materials as wall and ceiling cladding, the desired RT’s can be
achieved. The sound absorption materials are rated with sound absorption coefficient. The absorption
and transmission loss are dependent on the fiber or material size, volume of fiber,porosity, airflow
resistance, thickness, density, compressions and position of materials. Fiber or material size, porosity,
thickness and density are the major factors for sound absorption within an interior space. Sound
absorption however are inversely proportional to the diameter or width of the fibre.
2.1.2. Sound Intensity Level (SIL)
Sound energy is conveyed to our ears or instruments by means of a wave motion though some
elastic medium (gas, liquid or solid). At any given point in the medium, the energy content of the wave
disturbance varies as well as the square of the amplitude of the wave motion. That said, if the amplitude
of the oscillation is doubled, the energy of the wave motion is quadrupled.
Sound intensity also known as acoustic intensity is defined as the power carried per unit area.
The SI unit of intensity, which includes sound intensity, is the watt per square meter (W/㎡). One
application is the noise measurement of sound intensity in the air at a listener’s location as a sound
energy quantity.
Normally sound intensity is measured as a relative ratio to some standard intensity. The response
of the human ear to sound waves closely follows a logarithmic function of the form “R = k log l”, where
“R” is the response to a sound that has an intensity of “l”, and “k” is the constant of proportionality.
Thus, we define the relative sound intensity level as
The unit of SL is called a “decibel” (abbreviated as dB). “I” is the intensity of sound expressed in
watts per meter and the “ l0
” Is the reference intensity defined to be 10-12 W/㎡. This value of “l0
” is the
threshold (minimum sound intensity) of hearing at 1kHz, for a young person under the best
circumstances. Note that “I/l0
” is a unitless ratio, the intensities need only to be expressed in the same
units.
13
SL (dB)= 10log l l0
14. 2.1.3 REVERBERATION, ATTENUATION, ECHOS AND SOUND SHADOW
Sound reverberation is the persistence of sound reflection after the source of the sound has
ceased. Reverberation of the sound that persists in an enclosed space due to multiple reflections. Even
after the source of the sound has stopped. Reverberation is an important parameter for describing
speech intelligibility and the perception of music and is used to correct or normalise sound insulation
and sound power measurements. For example, specifying highly reflective ceiling panels directly above
the stage area in the auditorium will help direct the sound towards specific seating area, thus enhancing
the room’s acoustical performance. However, the same reflective performance will become a negative
factor, if said highly reflective walls and ceiling materials are installed in the rear auditorium. This is
because the sound of reflections from the rear of the room takes too long to reach the audience,
resulting in a distracting echo effect.
When sound travels through a medium, its intensity diminishes proportionally with the distance
traveled. In idealized materials, sound pressure (signal amplitude) is only reduced by the spreading of
the wave. Natural materials, however, all produce an effect which further weakens the sound. This
further weakens the results from scattering and absorption. Scattering is the reflection of sound is
directions other than its original direction of propagation. Absorption is the conversion of the sound
energy to other forms of energy. The combined effect of scattering and absorption is called attenuation.
An acoustic shadow or sound shadow is an area through which sound waves fail to propagate,
due to topographical obstruction or disruption of the waves via phenomenon such as wind currents,
buildings or sound barriers. A short distance acoustic shadow occurs behind a building or sound
barrier. The sound from a source is shielded by the obstruction. Due to diffraction around the object, it
will not be completely silent in the sound shadow. The amplitude of the sounds can be reduced
considerably however, depending on the additional distance the sound has to travel between the
source and receiver.
Sound reflection occurs when sound waves bounce off smooth, hard wall, ceiling and floor
surfaces. Concave surfaces tend to concentrate or focus reflected sound in one area. Convex surfaces
do just the opposite, they disperse found in multiple directions
14
15. 2.2 Methodology
The sound level meter is used to measure and record noise levels precisely. It calculates the
pressure caused by sound waves travelling through the air from noise sources. The unit of
measurement of sound intensity in decibels (dBA) which reflects the frequency-dependent nature of
human hearing at low sound levels.
Sound (dB) Musical noise
60 dB Regular piano practise
70 dB Fortissimo singer at 3ft. (1m)
75-85 dB Chamber music in small
auditorium
84-103 dB Violin
85-111 dB Flute
106 dB Timpani & bass drum rolls
120-137 dB Symphonic music peak
120 dB Amplified rock music 5ft. (1.5m)
150 dB Rock music peak close to
speakers
Figure 2.2.1 Sound Level Meter
Figure 2.2.2 Loudness of musical noise
15
16. Measuring Devices
Measuring tapes and laser distance measurer was used to measure and record the reading of the
dimension of our auditorium for drawings and calculation purposes. It was used to measure the distance
of the sound level meter from the sound source when taking the sound levels.
Digital Camera
Digital camera were used to capture photos of the existing context within our auditorium in order
for us to refer back and analyze the noise intrusions, acoustics finishing used to absorb unwanted sound,
reflection sound concentration, sound absorption, sound reverberation time and etc.
Figure 2.2.3 : Digital Camera
Figure 2.2.4 : Measuring Tape
Figure 2.2.5 : Laser Distance Measurer
Bluetooth Speaker
Is used to present the acoustic performance of the auditorium. A constant sound in terms of volume
and frequency at a single point was released as sound energy level and the readings were taken from
various distances.
Figure 2.2.6 : Bluetooth Speaker
Data Collection Method
There was a rehearsal going on during our site visit. Therefore, we analysed the acoustic
performance of the auditorium during this rehearsal. By using the equipment above, we have recorded
every necessarily detail of the auditorium which includes its layout and form, sound sources, types of
furniture, finishings, materials and etc. All the readings were taken for drawing and calculation purposes.
On-site sketches for the floor plans and sections were also taken for further analysis on acoustic
performance of this auditorium. 16
18. 3.1 Sound reinforcement system
The type of speakers typically used in auditorium can be classify into 3 different categories.
1. Sensor controlled subwoofer
2. Compact 3 way symmetrical line array module speakers
3. Two way compact versatile full range system speaker
Figure 3.1.1 : Sensor controlled subwoofer
Sensor controlled subwoofer is designed to produce low frequency sounds, typically from 40Hz up to 500
Hz. It helps to achieve a better sound quality for low frequency.
Figure 3.1.2 : Compact 3 way symmetrical line array module speakers
It function is to provide additional sound pressure and further dispersion option. It also provides a point
source with a flexible coverage of sound.
Figure 3.1.3 : 2 way compact versatile full range system speaker
Usually located on the central part of the theatre or auditorium. It helps to achieve the balance and quality
of sound throughout the space of the theatre.
18
19. Sound Reinforcement use in Shantanand Auditorium
- Single speaker cabinet
Figure 3.1.4: Single speaker cabinet
Figure 3.1.5 : Placement of single speaker cabinet below the stage
Single speaker cabinet are used to reproduce tone as sound wave generated from the
performance stage and then transmit it to the audience. 2 speakers are located below the stage.
However, the speakers are sometimes placed on top of the stage platform so that the high
frequencies can be project over to the nearest audience facing the stage. Both speakers are placed
on each side of the stage to distribute wider and equally sound wave in the auditorium.
19
20. - Stage monitor speaker
Figure 3.1.6 : Stage monitor speaker Figure 3.1.7 : Stage monitor speaker
Figure 3.1.8 : Placement of stage monitor speaker located on the stage facing the performers
Stage monitor speaker are also used commonly on the stage. It is essential for the
performers as it helps to amplify sound when acoustics instruments or vocals are utilised, it
functions as a monitoring device for the performers in order for them to keep track and maintain
their quality of their sound.
20
21. -Array speakers
Figure 3.1.9 : Array speaker
Figure 3.1.10 :Placement of array speaker on
top of the columns
A line array is a loudspeaker system that is consists of a number of identical loudspeaker
elements mounted in a line and fed in phase, to create a near-line source of sound. The distance
between adjacent drivers is close in between that they constructively interfere with each other to
transmit sound waves farther than traditional horn-loaded loudspeakers, and with a more evenly
distributed sound output pattern. The speakers are placed above on a hanging position. The left
and right placing of the speakers are slanted angled down to provide extra coverage to the nearest
front of the stage, while the top half will be angled upward facing the mezzanine floor of the
auditorium.
21
22. -Conventional sound reinforcement system
Commonly used sound reinforcement system may include the combination of microphones,
signal processor amplifiers and portable loudspeaker. These conventional system are also used as a
sound and volume enhances to distribute wider coverage to the whole auditorium.
Figure 3.1.11 : The conventional equipment used in the auditorium which consists of the microphone,signal
processor amplifiers and portable loudspeaker
22
23. Advantages of using sound reinforcement systems
-The use of digital speaker sound system will allow the users to adjust and modify sound
frequencies and sound intensity.
-Speakers are used as sound amplification to reinforce sound levels when sound quality is weak.
-Speaker systems also function to provide artificial reverberation in rooms to produce satisfactory
sounds for listening.
Figure 3.1.12 : Indication of speakers in section
There are approximately 8 permanent speakers used in the auditorium. The type of speaker
system used in the Shantanand Auditorium is mainly on distributed system. A distributed speaker
system is where a number of overhead loudspeakers being installed in the auditorium. Distributed
speaker system is used to overflow sound to the audience in the auditorium. A distributed speaker
system is effective to majority of the audience to gain adequate sound quality.Besides that, there are
some landed speakers on the stage and floor also contributes to the adequate of sound quality.
23
24. -The placement of the reinforcement systems are mainly focused on the left and right side of the
stage.This might cause an unbalance sound distribution from both sides and the middle.
- Reinforcement systems are not the solution to prolong the reverberation times of standing sound
waves. Standing sound waves are low frequency resonances that take place between two parallel
reflecting surfaces
-The originality sound of the performers are not clearly heard as the audience would hear the same
sounds arriving at two separates times. The ideal difference should not be more than 1/30 seconds. This
causes the disturbance in harmony of the original sound.
- When placement of the speaker is halfway down or is facing directly towards the front of the stage, the
audience might hear the sound from the loudspeaker first, followed by the direct sound as a faint echo.
However, this problem can be solved by adding a delayed mechanism in the loudspeaker that balance
the direct sound.
- If the distance of the speaker is far away from the audience, sound attenuation might occur, where the
sound path is affected which reduces the intelligibility.
- Need maintenance and proper storage care for the speakers.
- If the speakers malfunction during the performance, it will cause a disturbance in the sound
distribution.
- Inefficient because the performers must tune or adjust the speakers according to its suitable outcome.
It is also troublesome for them to carry in and out for different type of stage shows.
Disadvantages of using sound reinforcement system
Figure 3.1.13 : Sound distribution uneven for middle
audience
24
25. 3.2 Sound concentration and propagation
Sound Propagation
Figure 3.2.1 : Figure above show sound distribution in the seating
area taken from the sound source of the stage
From a point source the sound waves will be circular, and intensity of sound will be surmised the
Inverse Square Law. After we gathered the information of the sound intensity level utilizing sound level
meter from the performers amid their practice, we plotted out the sound dispersion all through the
seating and discovered that energy loss of sound propagation in Shantanand Auditorium is low a direct
result of its wide shallow arrangement. The separation from the stage to the end is just 14.9m long due
to its sunken plan of seating generally near the stage.
The stage as the propagation area changed, outputting consistent sound from the performers.
The discoveries demonstrate that the design and the utilization of material of Shantanand Auditorium
are not proper as it produce unpleasant sound at certain area and uneven sound distribution.
Figure 3.2.3 : Figure above shows SIL readings of the auditorium
Figure 3.2.2 : Figure above show the
wide shallow concave shape of the
Shantanand Auditorium that helps
spread sound evenly
25
26. Sound Concentration
Figure 3.2.4 : Figure above show sound distribution in the seating area taken from the sound source of the stage
The shape and composition of the auditorium reflects sound to the center of the auditorium. This
concentration of sound makes the highlighted area the best spot in the auditorium.
26
27. 3.3 Sound Shadow
Figure 3.3.1 : Sectional Drawing showing the dimension of the sound shadow area and differences of sound intensity
level
Sound shadow imperfection can be resolved when the sound wave neglected to propagate
because of the exhibition obstruction. After we gathered the information of sound intensity level from
the performers, we discovered there is intermediate sound shadow under the gallery as the sound
intensity level dropped from 65 dB to 55 dB when we were moving from the front seating to the seating
under the overhang. The display overhang depth ought to be not as much as double the height of the
exhibition underside, however Shantanand Auditorium has moderately low floor to ceiling height of
2.38m with 4.76m depth under the balcony. The ratio of the ceiling height and depth is precisely 1:2
which implies the occurrence of a sound shadow. Consequently, the side wall of Shantanand
Auditorium is made of timber board to reflect sound into the sound shadow area.
27
28. Auditorium halls vary in both shapes and sizes, depending on the purpose and budget. Of the
abundance of shapes, the two most common shapes used would be the the rectangular or shoe-boxed
geometry halls. The Shantanand auditorium is shoe-boxed, where the stage is placed at the narrow end
of the hall. This is usually done to maximise the seating area while maintaining relatively close distance
between the seats and stage.
3.4 Sound Reflection and Diffusion
Figure 3.4.1 indicates how the composition of the auditorium reflects sound throughout the space. The
walls reflect sound towards the center of the auditorium, reaching the seats located at the sides as well.
28
29. The Shantanand auditorium was initially designed as a multi-purpose hall. It was later redesigned
into a performance theatre where musical performances from the Indian community were held. The area
was renovated in order to fulfil the acoustic requirements of a musical performance hall. One of the many
renovations included the change in ceiling, whereby they lowered the floor to ceiling heights and included
several additional elements such as a tilted ceiling surface as well as a convex-surfaced ceiling. These
can be seen in Figure 3.4.2. The tilted ceiling allows for sound from the performers to reach the audience
in the upper balcony area as shown in Figure 3.4.2. The convex-surface ceiling also disperses sound to
the upper balcony seats.
Figure 3.4.2 shows the reflection and dispersion of sound from a performer through a sectional cut of the
auditorium.
29
30. Figure 3.4.3 shows how the glass railing blocks direct sound from the performer from reaching the audience in the
upper balcony.
It can be seen in Figure 3.4.3 that the upper balcony areas do not receive direct sound as the
glass railing obstructs sound from reaching. Due to this, sound reinforcement was added in the form of
array speakers, shown in Figure 3.4.4, that are hung closer to the ceiling. This inclusion allows for the
upper balcony area to receive direct sounds.
It can be seen in Figure 3.4.3 that the upper balcony areas do not receive direct sound as the
glass railing obstructs sound from reaching. Due to this, sound reinforcement was added in the form of
array speakers, shown in Figure 3.4.4, that are hung closer to the ceiling. This inclusion allows for the
upper balcony area to receive direct sounds.
Figure 3.4.4 shows reflection made from the sound reinforcement
The sub-woofers are places on floor level as lower frequency sounds are less prone to suffer from
diffraction due to small architectural elements. Therefore, sharp cornices as displayed in Figure 3.4.4
would not scatter the low frequency sounds produced by the sub-woofers, negating unnecessary sound
reflections.
30
31. 3.5 Flutter echoes and sound delay
Echoes are deemed to be one of the more serious acoustical defects. Different occurrences
would consider different values for a sound reflection to be considered an echo. 40 milliseconds is
considered an echo for speech whereas musical performances only consider 100 milliseconds as an
echo.
Figure 3.5.1
Figure 3.5.2
Echo =
(R1 + R2) - D
0.32
=
(15.9m + 16.4m) - 13.6m
0.32
= 58.4 msec
Echo =
(R1 + R2) - D
0.32
=
(4.6m + 5.5m) - 3.6m
0.32
= 20.3 msec
31
32. Figure 3.5.3
Figure 3.5.4
Echo =
(R1 + R2) - D
0.32
=
(9.3m + 3.8m) - 12.8m
0.32
= 0.9 msec
In Figure 3.5.4, it shows that
the upper balcony does not
receive echo without sound
reinforcement because the
area does not receive direct
sound as it is blocked by the
glass railing
To conclude the analysis of sound echo, the Shantanand auditorium has acceptable sound delay for
its purpose for musical performances as all values for sound delay are below 100 milliseconds.
The shathanand auditorium does not have any flutter echoes due to the absence of parallel walls
where sound is prominent. Though the rear and entrance walls are parallel, the walls along the entrance are
of sound absorbent material, negating the reflection patterns that would cause echo flutters.
32
33. Sound & Noise sources
3.6 Noise intrusion (Noise source)
Noise is generally defined as an undesirable sound that is determined by the attitude of the
occupants toward the noise source. Noise can be categorized as continuous, variable, impulsive or
intermittent depending on how it changes over time. In addition, continuous noise is noise that remains
constant and stable over given time period. Different operations or different noise sources can also
cause the sound to change. Noise is intermittent if there is a mix of relatively quiet and noisy time
periods. Impulsive or impact noise is a very short burst of loud noise which lasts for less than a second.
Although the Shantanand Auditorium is designed based on the acoustic architecture and filled with
acoustic equipment yet there are still some internal and external noises that cause a disturbance within
the auditorium.
33
34. External Noise Sources
There are multiple noise source created at the outside of the hall. Opening and closing of the door,
human chatters and human noise. On the outside of the hall where the lobby is just situated next to the
door, the conversation of the people will enter the auditorium through the main entrance which just
shows that there is no buffer zone between the area and the door lacks of sound treatment. Besides,
before entering the hall, peoples required to take off their shoes, this helps to avoiding the sound
produce by human walking which affect the performance and overall sound distribution inside the hall.
There is a corridor beside the auditorium that is use as a passageway for the crew and workers to get
into the front and back of the auditorium without the occupants. However, the seats near the doors and
passageway will get noise disturbance if people using the passageway due to lack of buffer zone and
noise insulation around the wall.
Figure 3.6.1 Shoes need to be taken off
before entering through the door. This act
may cause some noise intrusion
Figure 3.6.2 No buffer zone that separate
between the walkway and the main door
Figure 3.6.3 The distance between the
walkway and seats are near which create
unwanted sound disturbance when
people using it
Figure 3.6.4 Noise can be heard from the
side of the room if there are functions going
on.
34
35. 2
1
-Corridor
The high concentration of people gather at the corridor area increases the noise
level that affecting the audience inside.
-Side Room
Noise produced by opening and shutting of the doors.
35
Figure 3.6.5
36. The most disturbance sound among the multiple noise sources in the hall are came from the
electrical appliances. Besides that, sound produce by human chatting, foot stepping on the timber floor
and the doors opening and closing. The air flowing through the air conditioning diffuser creates low
frequency noise. Audience who seats at the gallery and under the gallery will directly facing disturbance
due to the close proximity of the seat. The door located at the entrance and passageway create noise
while people using it. There is no buffer zone surrounding the area where the door is situated too near
the seats which in some circumstances where the technicians or stuff using it. However the additional
curtain in front of the door helps reducing the noise created by the people at the entrance. The floor
between the stage and audience are timber floor which resulted foot stepping noises when people walks
through. The stage uses timber flooring which covered with rubber sheet but it does not reduced the
noise created by the stepping of the performers. In the audience area, the timber floor is covered by soft
pile carpet which avoid the creation of foot step and absorb the noise created by the people.
Internal Noise Sources
Figure 3.6.6 Curtains create an informal
buffer zone which help absorb the noise
Figure 3.6.7 The door is located too near
to the seat which noise from the outside
will disturb the audience hearing
experience
Figure 3.6.8 The air conditioning diffuser
create low frequency noise as the
proximity within the seat and ceiling too
near
36
37. -Air Conditioning Diffuser
Continuous noise produced by the air passing through air conditioning diffuser.
-Footstep
Impulsives noise generated by the footsteps as people walking around.
1
2
37
Figure 3.6.9
38. Internal Noise Sources Location (Floor Plan)
STAGE
Foot stepping on stage
AREA IN FRONT OF THE
STAGE
Foot stepping on timber floor
ENTRANCE(G FLOOR)
Timber door open & closing
DOORS TO
PASSAGEWAYS
Timber door open & closing
ENTRANCE (1ST FLOOR)
Timber door open & closing
AUDIENCE AREA
Human sounds & chatters
Figure 3.6.10 Ground
Floor Plan (NTS)
Figure 3.6.11 First Floor Plan
(NTS)
38
39. GALLERY AREA
High ceiling square
air-conditioning diffuser
AUDIENCE AREA
High ceiling round
air-conditioning diffuser
CORRIDOR
Linear air-conditioning
diffuser
39
Internal Noise Sources Location (Reflected Ceiling Plan)
Figure 3.6.12 Reflected
Ceiling Plan GF (NTS)
Figure 3.6.13 Reflected
Ceiling Plan 1st (NTS)
40. Materiality and Sound Absorption Coefficient
GROUND FLOOR PLAN
INTERIOR: SEATING
GROUND FLOOR PLAN
INTERIOR: STAGE
FIRST FLOOR PLAN
INTERIOR: SEATING
FIRST FLOOR PLAN
INTERIOR: CONTROL ROOM
40
45. AREA COMPONENT MATERIAL
ABSORPTION COEFFICIENT(⍺)
125 Hz 500 Hz 1000 Hz
STAGE FLOOR
PAINTED SMOOTH
CONCRETE
0.01 0.02 0.02
RUBBER SHEET, OVER
TIMBER FLOOR
0.01 0.15 0.25
STAGE
&
SEATING
VENTILATION
GRILLE
PER METER SQUARE
0.60 0.60 0.60
CONTR0L
ROOM
DECK
OPENING
TIMBER PANELS WITH
TIMBER FRAME
0.14 0.06 0.08
45
46. Materiality
The gypsum board comes with extra thickness in 1 1/2 inch to resist panel vibration, due to
its mass it can lower the absorption frequency and higher the reflections frequency. The height of the
auditorium is around 9m, which hardly transmit sound. therefore the suspended ceiling provide short
delayed of sound transmitting and lower down the volume of the auditorium.
Figure 3.7.3 Gypsum plaster ceiling
construction
Figure 3.7.1 Gypsum plaster ceiling
Figure 3.7.2 Image from site
Ceiling
-Gypsum Plaster with Ceiling Grid
*Acoustic treatment is a crucial and amazing result of
acoustical design elements to dampen and diffuse
sound waves inside of a room to minimize constructive
and deconstructive interference, thereby increasing the
quality of the mental imaging of the sound field. It
enhances a room to be designed to equally absorb
sound waves to all the materials, which depends on
the proper shapes and finishes on the surface.
46
Gypsum plaster is used as the ceiling in the auditorium. It is a common material that uses in
most of the design of auditorium. With the proper angle on the ceiling panels, it also provides a good
sound reflection to the seating area and minimizes the echo that is created.
3.7 Construction of Materials
Acoustic treatment
47. Hard Acoustical Wall (Timber Acoustic Panel)
Figure 3.7.6 Timber acoustic
panel construction
Figure 3.7.5 Timber panel walls on site
47
Acoustic Treatment
Timber acoustic panel is installed at two sides of the stage. It is used not only for aesthetic
purpose, it is also designed to absorb the sound energy in the space. To absorb unnecessary
sound waves, it is designed with gap between each panel. For the base to support the timber
acoustic panel, plaster or gypsum board is used for the basic requirement of standard acoustic
panel.
48. Figure 3.7.9 : Sectional detail
Soft Acoustical (Fiberglass Acoustic Panel)
Figure 3.7.8 : The texture of the
Fiberglass Acoustic Panel
48
Acoustic Treatment
From the seating area, the wall is designed to place fiberglass acoustic wall as the surface of
interior auditorium. It is used to control the echo from the rear wall and balcony faces. The
reverberation time in the auditorium is directly proportional to the volume of the space and is inversely
proportional to the total sound absorption within the room.
With an optimized location and position for the installation of soft acoustical panel, it achieves a
proper sound distribution diffuse and reverberation.
49. Parquet Wooden Flooring (Wooden Floor on Floor joist)
Materiality
Acoustic joist strips are a practical method for diminishing effect commotion through regular
timber joist floors. The strip is provided in 20m self cement rolls that are effortlessly put on the
highest point of the joists. It incredibly decrease the effect sound protection. Likewise, it enhances
the acoustic execution and in this manner decrease the effect sound level.
Figure 3.7.11 :The wooden floor is nailing into the decking with
allow sound to mechanically transfer through the nail into the
deck negating the top soundproofing.
Figure 3.7.10 : The photo above shows the wooden
flooring of the seating floor area.
49
50. Seating Flooring (Pile Carpet Bounded to Closed-cell Underlay)
Acoustic Treatment
While rugs commotion transmission through floor in multi-structures, the level of real clamor
diminishment, and also individuals' impression of it, are subject to the recurrence Conveyance of the
sound. Floor coverings are greatly powerful stable safeguards in light of the fact that the individual
strands, heap tufts and underlay have diverse resounding frequencies at which they assimilate sound.
Figure 3.7.13 :Construction detail of acoustical floor carpetFigure 3.7.12 : Carpets absorb sounds up to ten times
better than hard flooring
50
51. Stage curtain (Pleated Medium Velour Curtain)
Materiality
The curtain used behind the stage in the auditorium will reduce reverberation and echo in a large
room, as well as reduce interference from outside noise. Also, it uses a powerful sound blocking lining
to provide maximum sound protection. The acoustic curtain is thick and highly porous. The thicker
the absorption material, the more effective it will be against a longer wavelength (lower frequency) of
sound.
Figure 3.7.14 : Photo of the curtain behind the stage
of the auditorium.
Figure 3.7.15 :The curtain make an acoustically excellent finish
that fully preserves the absorptivity of the substrate.
All of the
sound wave
bounces off
Acoustically
reflective surface
(wallboard,
wood)
Some of the
sound wave is
absorbed
Acoustically
Absorbent
surface
(Curtains,
Carpet)
51
Acoustic Treatment
The pleated medium curtain plays a role as private-public space divider but also functions as a
reverberation and echo reducer in the auditorium. It also reduces the interference from outside noise.
It uses sound blocking lining that provides maximum sound protection from inner and outer area. As
the thicker the curtain, the more effective the function to block longer wavelength of sound.
52. Seating Furniture
Acoustic Treatment
Polyurethane froth with a high porosity permits compelling sound assimilation coefficient. It has
a cell structure which permits wind current, the assimilated sound vitality is then changed over into
warm vitality. The geometry example of these sorts of safeguards will influence the dissipating of the
sound.
Figure 3.7.18 :Materials for upholstered tip-up seats
Figure 3.7.16 : Floor plan that indicate the seating furniture
Figure 3.7.17 : Auditorium seats
52
54. 4.1 Area of Floor Materials
Ground Floor Plan (N.T.S)
First Floor Plan (N.T.S)
Figure 4.1.1 Floor Plan to indicate the floor
materials
F1
F2
F3
F4
SABINE FORMULA : RT = 0.16V / A
Where,
RT : Reverberation Time (Sec)
V : Volume of the Room
A : Total Absorption of Room Surface
*The concert hall is currently used to house
musical performances and etc.. 500 Hz was
used as the standard of measurement as
musical performances regularly fall into this
category of frequency.
Surface Area (m2
) 500 Hz
Absorption Coefficient (α) Abs.units (m2
sabins)
F1 81.20 0.15 12.18
F2 150.15 0.10 15.02
F3 310.20 0.25 77.55
F4 161.43 0.25 40.36
TOTAL (∑FAα
) 145.11
Legend
F1 Stage rubber sheet over timber floor
F2 Wooden Floor On Joist
F3 Pile Carpet Bounded to Closed-cell Underlay
F4 Pile Carpet Bounded to Closed-cell Underlay
54
55. 4.2 Area of Wall Materials
Ground Floor Plan (N.T.S)
Section (N.T.S)
Figure 4.2.1 Drawing to indicate the wall materials
W1
W2
W3
W4
SABINE FORMULA : RT = 0.16V / A
Where,
RT : Reverberation Time (Sec)
V : Volume of the Room
A : Total Absorption of Room Surface
W5
W3
*The concert hall is currently used to house
musical performances and etc.. 500 Hz was
used as the standard of measurement as
musical performances regularly fall into this
category of frequency.
Surface Area (m2
) 500 Hz
Absorption Coefficient (α) Abs.units (m2
sabins)
W1 178.34 0.01 1.78
W2 56.24 0.75 42.18
W3 141.54 0.42 59.45
W4 147.40 0.75 110.55
W5 9.30 0.06 0.56
TOTAL (∑WAα
) 214.52
Legend
W1 Stage Smooth Painted Concrete Wall
W2 Acoustics Absorption Panel
W3 Timber Acoustic Panel
W4 Acoustic Absorption Panel
W5 Timber Panel with Timber Frame
55
56. 4.3 Area of Other Materials
Section (N.T.S)
Figure 4.3.1 Drawing to indicate other materials
SABINE FORMULA : RT = 0.16V / A
Where,
RT : Reverberation Time (Sec)
V : Volume of the Room
A : Total Absorption of Room Surface
M1
M2
M3
M4
M5
M6
M7
*The concert hall is currently used to house
musical performances and etc.. 500 Hz was
used as the standard of measurement as
musical performances regularly fall into this
category of frequency.
Surface Area (m2
) 500 Hz
Absorption Coefficient (α) Abs.units (m2
sabins)
M1 134.40 0.13 17.47
M2 290.46 0.59 171.37
M3 338.53 0.04 13.54
M4 30.40 0.04 1.22
M5 13.23 0.06 0.79
M6 32.23 0.50 16.12
M7 26.88 0.60 16.13
TOTAL (∑MAα
) 236.64
Legend
M1 Pleated Medium Velour Curtains
M2 618 Seats -Unoccupied
M3 Gypsum Board With Ceiling Grid
M4 6mm Glass Railing
M5 Doors
M6 Acoustic Rough Plaster To Solid Back
M7 Ventilation Grille
56
57. Note
A : Area
Α : Absorption Coefficient
Aα : Absorption Surface
4.4 Reverberation Time
SABINE FORMULA : RT = 0.16V / A
Where,
RT : Reverberation Time (Sec)
V : Volume of the Room
A : Total Absorption of Room Surface
V = 4312.59 m3
A = ∑FAα
+ WAα
+ MAα
= 145.11 + 214.52 + 236.64 = 596.27 m2
RT= 0.16(4312.59)/596.27)
= 1.16 sec
The volume of Shantanand Auditorium is approximately 4312 m3
, with a
reverberation time of 1.16 seconds. From the figure above we can conclude that the
reverberation time is slightly off the recommended range for the auditorium to function as
a concert hall. Replacing certain materials with harder surfaces might improve the rate of
reflection, allowing for a better reverberation time.
Figure 4.4.1 “Ideal” average reverberation time versus room volume for several basic types of room.
Edwin, C. (2018). Lecture 2 Room Acoustic [PDF slides].
57
59. 5.1 Create a buffer zone
Figure 5.1.1: The extension of the buffer zone are added in
the ground floor plan
Shantanand auditorium is only accessible through one entrance and one exit of the solid timber
door. However the sound absorption coefficient of the solid timber door is only 0.06. Its low value will
cause external sound intrusion to the auditorium.
By creating a buffer zone before the entrance to the auditorium, it enables the sound transmission
to be trapped between door to door and is absorbed by additional acoustic wall panels at both sides of
the wall. The noises created by the open and closing of the doors can be sealed within the buffer zone.
59
60. Figure 5.2.1 : The figure show the additional material apply in the buffer zone
to trap sound
60
Figure 5.2.2 : The components of the acoustic wooden door (Soundproofing door)
The materials used for the doors and walls in the buffer zone area are essential in trapping
sound due to its absorption and reflection ability. An acoustic timber door should be introduced to
Shantanand auditorium as it has better sound proofing quality to reduce the sound being
transmitted through the door. Furthermore, acoustical timber doors should come with proper
intumescent seals at both sides as well as the bottom. Threshold plates provide an optimum seal
surface for the bottom of door.
5.2 Materiality for doors and walls in the buffer zone
61. Figure 5.3.1 : The suggestion method to increase its reverberation time
61
Currently, the Shantanand auditorium uses carpet flooring and gypsum boards as the ceiling.
Though the current materials contribute to the reflection and transmission of sound, replacing these
materials would add to the reverberation time. A suggestion would be to use timber seating and
replace the flooring material with teak wood. The current reverberation time is 1.16 seconds, well
below the values required for a concert hall. If the suggested materials were to replace the current
ones, the reverberation times, as shown in the figure above, would increase to 1.73 seconds,
bringing the auditorium to be within the range a concert hall’s recommended reverberation time.
5.3 Increase the reverberation time in the auditorium
62. Figure 5.4.1 : The additional of concave shape at the balcony parapet
The additional concave shape parapet allowed direct and reflected sound to increase its
concentration at the underside of the balcony. Sound will then transmit into the balcony underneath
for the audiences to receive a clearer sound without flutter echoes.
62
5.4 Shaping a concave shape at the balcony parapet
63. 63
Figure 5.5.1 : The escalated balcony height and tilted ceiling at the ground floor
The dimension of the floor to ceiling for the space below the upper balcony area can be
increased in order to resolve the issue of a sound shadow. The dimension should not be less than the
depth of the balcony. By doing so, sounds reaching the furthermost depths of the lower floor would be
clearer.
5.5 Increase the balcony height and tited ceiling
65. In conclusion, this auditorium case study project has taught us a lot as a group, such as how
acoustic design works better depending on the functions of the auditorium,as well as to suite the
comforts of the user. The auditorium layout and the materials chosen on the structure as well as
furnitures such as the walls, floors, chairs, curtains, etc.. can affect the acoustics inside the auditorium
hall and even the effect external sounds from the auditorium hall.
An uditorium is uniques as it is built to enable an audience to perceive and witness a
performances as well as be used for recitals, presentations and performing arts. Apart from
entertainment, an auditorium is also used for public speaking or talks such as lectures and workshops.
A successful design of an auditorium depends on the acoustic design such as the layout as well as the
absorption coefficient of materials used to encapsulate the desired tones and block out the unwanted.
The volume of Shantanand Auditorium is approximately 4312 m3, with a reverberation time of
1.16 seconds. Hence the need for the auditorium to have additional sound reinforcement to
compensate for the low reverberation time. From the figure above we can conclude that the
reverberation time is slightly off the recommended range for the auditorium to function as a concert hall.
Replacing certain materials with harder surfaces might improve the rate of reflection, allowing for a better
reverberation time.
65
67. 1. Absorption Coefficient Chart. (n.d.). Retrieved May 7, 2018, from
http://www.acoustic-supplies.com/absorption-coefficient-chart/
2. Acoustic Damping using Polyurethane/Polymer Composites. (n.d.). Retrieved May 2, 2018, from
http://www.appropedia.org/Acoustic_Damping_using_Polyurethane/Polymer_Composites
3. Attenuation of Sound Waves. (n.d.). Retrieved May 6, 2018, from
https://www.ndeed.org/EducationResources/CommunityCollege/Ultrasonics/
Physics/attenuation.htm
4. Auditorium Acoustics and Architectural Design. (n.d.). Retrieved on May 4th 2018 from
https://books.google.com.my/books
5. Auditorium noise isolation and acoustical design principals. (n.d.). Retrieved on May 4th 2018 from
https://www.abdengineering.com/blog/auditorium-noise-isolation/
6. Decibels dBA. (n.d.). Retrieved May 1, 2018, from
https://silentpc.com/cgi-bin/e/decibels.html
7. Dulari, H. R. (2002, May/June). The Temple of Fine Arts Kuala Lumpur Malaysia | Sanctuary of Arts
for Dance and Music. Retrieved on April 15, 2018, from
http://www.tfa.org.my/#!about us/building
67
68. 8.. Edwin, C. (2018). Lecture 2 Room Acoustic [PDF slides]. Retrieve on May 4th 2018 from
https://lookaside.fbsbx.com/file/Lecture%202-%20Room%20Acoustic%20March%202018%20Edwin.p
df?token=AWycuTZ2Fsd3QGrD84dvo0lrnpBJxPpUpkAPkFScbFehAHqLwE74MU4mwfPY_vHpkRxEFw
u0CVCH0WNmsddBwvW_HvZnOU9o6vAvut2S2QbViHvQxLbY1Y9r7wHVpjcW017pl9z_cHU4KpZTij_v0
TdL8bFwuZXVhtYiU__zK7QYVgf
9. Facilities. (n.d.). Retrieved May 02, 2018, from
http://shantanand-adt.org/index.php/facilities#seating
10. Farhis, M. N. (2007, November 5). The Temple of Fine Arts. Retrieved on March 15, 2018, from
http://www.visitkl.gov.my/visitklv2/index.php?r=column/cthree&id=63&place_id=896
11. How to Prevent Hearing Damage When Using Headphones. (n.d.). Retrieved May 3, 2018, from
https://headphonesaddict.com/safe-headphone-use/
12.. Littlefield, D. (2012). Metric handbook: planning and design data. London: Routledge.
13. Network, D. (2015, March 16). Soundproofing a Floor. Retrieved May 2, 2018, from
http://www.diynetwork.com/how-to/rooms-and-spaces/floors/soundproofing- a-floor
14. Network, W. (n.d.). Acoustics Doors, Acoustic Sliding Doors, Sound profing doors. Retrieved May
02, 2018, from
http://www.earconsacoustic.com/ acoustic-doors.html 60
15. Room Acoustics. (2014, January 25). Retrieved May 02, 2018, from
https://www.soundandvision.com/content/room-acoustics
68
69. 16. Sound Intensity. (n.d.). Retrieved May 4, 2018, from
http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/intens.html
17. Soundproofing floors and noise absorption. (n.d.). Retrieved May 5, 2018, from
http://www.carpetyourlife.com/en/about-carpet/advantages/soundproofing-floors
18. The acoustical design of the new lecture auditorium, Faculty of Law, Ain Shams University. (2012,
June 29). Retrieved on May 4th 2018 from
https://www.sciencedirect.com/science/article/pii/S2090447912000317
19. The Acoustic Treatment Guide for Panels & Foam | LN. (2018, January 12). Retrieved on May 4th
2018 from
https://ledgernote.com/columns/studio-recording/acoustic-treatment-guide-for-panels-and-foam/
20. The Temple of Fine Arts. (n.d.). Retrieved May 4, 2018, from
http://www.visitkl.gov.my/visitklv2/index.php?r=column%2Fcthree&id=63&place_id=896
69