Representing Sound

Computers cannot interpret an analogue sound wave

The amplitude (height) of the sound represents volume

The closer together the waves are the higher the note

In order to store the sounds digitally, a sample is taken at regular intervals

This is known as sample rate and is measured in Hertz

How to improve sound quality

• You can improve the sound quality by increasing the sample rate

Another way to improve the quality is to increase the number of bits used to represent each sound

The number of bits per sample is called the sample resolution

By increasing the sample resolution you can sample even more of the original analogue wave