The document provides an overview of sound sensors, detailing their functionality, types, history, working principles, and specifications. Sound sensors detect sound waves and convert them into electrical signals, with common types including carbon, ribbon, and dynamic microphones. The document also discusses applications, features, and a pin diagram for sound sensor modules.

2. “PRESENTATION TITLE”

SOUND
SENSOR

3.  GROUP MEMBERS NAME :
 (1) ALI ABBAS FA20-BEE-066
 (2) TALHA MUHAMMAD FA20-BEE-088
 (3) AWAIS RAZZAQ FA20-BEE-080
 (4) MUHAMMAD AMMAR FA20-BEE-177

4. What is sound Sensor ?
 A sound sensor is a device that detects the sound
waves through its intensity and converts these waves
into electrical signals .
 It only detects the existence of sound according to the principle of
vibration .
 It is used to receive the acoustic waves and display the vibration
image of sound .

5. TYPES OF SENSORS OR
MICROPHONE :
 There are Three Types of Sound Sensor:
Carbon Microphone:
 it is type of microphone that convert Sounds into Electrical Audio
Signals. Consists of two metals plates seperated by granules of Carbon.
Ribbon Microphone:
 It converts sound waves via electromagnetic induction .It have
conductive ribbons like diaphragm and simple circuitry.

6. Dynamic Microphone:
 This sound sensor type is widely used for stage, musical performances
and other applications. It is one of the most widely used forms of free
standing microphones. It has a simple design and offers cost effective
microphones.

7.  SOUND SENSOR HISTORY:
 The sound sensor was not invented by only
one person.
 In 1861 Johann Phillip Reis first invented a
sound detector .
 In 1861, Philipp Reis succeeded in creating a device that captured
sound.
 He successfully converted it to electrical impulses which were
transmitted via electrical wires to another device.
 Then it transformed these pulses into recognizable sounds similar
to the original acoustical source.

8. BLOCK DIAGRAM:

9.  CIRCUIT DIAGRAM:

10.  WORKING :
 The working principle of this sensor is similar to Human ears.
Because human ear includes a diaphragm and the main function
of this diaphragm is, it uses the vibrations and changes into
signals.
 Audio devices uses the sound sensors to convert sound into electric
signal such as MICROPHONES .
 Sound sensor has a thin piece of material that is known as diaphragm
that vibrates when hit by sound waves
 These vibrations are converted by the sensor in to the electric signal

11.  The air pressure vibrations makes the diaphragm move and this
diaphragm motion is sensed by sensor and converted it into the
electrical signal .
 The LEGO sound sensor is similar to microphone and it can
sense a sound level but it cannot detect sound frequency .

12.  Sound Sensor Module
Pin Diagram:

13. Pin Number Pin Name Description
1 VCC +5 v power supply
2 GND Ground (-) power supply
3 OUT Digital Output (0 or 1)

14.  Sound Sensor Hardware
Overview:

15.  Features
The features of the sound sensor include the following
 These sensors are very simple to use
 It gives analog output signal.
 Simply incorporates using logic modules on the input area

16.  APPLICATIONS :
 They are used for the security systems .
 It is easy to manipulate sound in real time .
 They are easily affordable .
 Wireless sound sensors provide great freedom while speaking .It
does not need cabling as compared to wired mic .

17.  Specifications:
The specifications of the sound sensor include the following
 The range of operating voltage is 3.⅗ V
 The operating current is 4~5 mA
 The voltage gain 26 dB ((V=6V, f=1kHz)
 The sensitivity of the microphone (1kHz) is 52 to 48 dB
 The impedance of the microphone is 2.2k Ohm
 The frequency of m microphone is16 to 20 kHz
 The signal to noise ratio is 54 dB