Skip to content
Learnearn.uk » Binary Unit Home » Sound Representation In Binary

Sound Representation In Binary

How microphones work

Analog Vs Digital

 

What is sound?

Sound is vibrations that travel though a medium (usually air) from one point to another, caused by rapid changes pressure within that medium.

When we shout, our vocal cords vibrate rapidly, causing the pressure in the air surrounding them to increase and decrease, producing a pressure(aka sound) wave. This wave travels though the air.

All sound waves have 2 components – volume and pitch.

Volume ( amplitude)

When we shout louder, what we are really doing in increasing the amplitude of the wave that is produced.

Pitch (Frequency)

When we talk in a high pitch voice, what we are really doing is vibrating our vocal chords more rapidly, causing the frequency of the waves to increase.

Wave simulator

This means that in order for a computer to be able to store ( and play back ) sound, we need to be able to convert these sound waves in to a format the can represent both the volume(amplitude) and pitch(frequency) of the sound being recorded.

high-amplitude

High Amplitude Wave

low-ampitude

Low Amplitude Wave

Low Frequency Wave

Low Frequency Wave

High Frequency Wave

High Frequency Wave

Recording Sound

Converting to binary

Audio Quality

Resources