MELJUN CORTES Multimedia Lecture Chapter6
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MELJUN CORTES Multimedia Lecture Chapter6

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MELJUN CORTES Multimedia Lecture Chapter6

MELJUN CORTES Multimedia Lecture Chapter6

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MELJUN CORTES Multimedia Lecture Chapter6 MELJUN CORTES Multimedia Lecture Chapter6 Presentation Transcript

  • Chapter 6 - Sound MELJUN CORTES
  • Chapter Objectives • • • • • Explain the basic principles of sound Describe the different categories of sound Explain how sound can be used in different types of Web sites Describe the roles and responsibilities of the Audio Specialist Describe several factors that determine sound quality Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Chapter Objectives • • • • • List some different sources of digital audio List and explain the steps in producing digital audio Explain the difference between destructive and nondestructive sound processing List and describe the different sound tools available for producing and editing Web audio List the most popular audio file formats found on the Web and explain some of their key features Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Introduction    Acquire knowledge and pleasure through our sense of hearing Sound sets the mood/tone If not properly incorporated, may do more harm than good Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Basic Principles of Sound  Waveform  Amplitude   measured in decibels Frequency  measured in hertz (Hz)/kilohertz(kHz) Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Types of Sound   Analog Digital   Also called audio Acquired through sound sampling/digitizing Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Categories of Sound  Content sounds   Provide information Ambient sounds  Reinforce message and set the mood Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Uses of Sound  Online Training and Education Advertising and E-commerce Entertainment and Games Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Audio Specialist  Records and process sound Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Sound Quality  Rate   Number of waveform samples/second 11 kHz – 44 kHz Resolution Number of bits used to sample sound 8-bit and 16-bit Mono, Stereo, Surround (3D) Sound Downloaded v. Streamed Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Digital Audio Sources   Clip audio Record your own Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Producing Digital Audio      Planning Recording Processing Assembling Delivering Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Planning  Include in:    Flowcharts Storyboards Scripts Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Recording  Microphone  uses analog-to-digital (ADC) converter Digital audiotape (DAT) Hire talented actors/narrators MIDI Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Processing   Destructive v. Non-destructive Editing and Mixing Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Assembling   Linked Embedded Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Delivering   Sound Card Speakers – digital-to-analog (DAC) converter Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Digital Audio Software     Bias Sonic Foundry Digidesign Shareware Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Bias  Peak - Mac     Ideal for manipulating single-sound files Change volume, pitch, tempo Support for a variety of file formats including Red Book Special Effects  Fades, envelopes, equalizer, echo/reverberation, pitch shift, normalize, backward and tempo Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Sonic Foundry  Sound Forge – Windows      Vegas   Set sample rate, resolution, size Record Copy, paste, mix, crossfade Synchronize using SMPTE timecode Multitrack recording Acid  Multitrack and supports MIDI Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Digidesign  Pro Tools – cross platform Complete package  Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Shareware   Cool Edit Mixman Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • File Formats     AIFF/AIF AU DCR MIDI     MP3 QuickTime (MOV) Real (RAM, RM, G2) WAV Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.
  • Compression   Variety of schemes MP3 Harcourt, Inc. items and derived items copyright © 2002 by Harcourt, Inc.