1.2.4 Data Storage (Sound)

Question 1

How can sound be sampled?

Answer 1

Sound is broken down into thousands of samples per second – each of these samples is then stored as binary data.

Question 2

How can sound be stored in a digital form?

Answer 2

Sound exists as waves – however as computers only understand binary values this needs to be converted

Question 3

What is sample frequency?

Answer 3

The number of audio samples captured every second

Question 4

What is bit depth?

Answer 4

Number of bits available for each sample

Question 5

What is bit rate?

Answer 5

The number of bits used per second of audio

Question 6

What is the effect of sample rate, duration and bit depth on playback quality?

Answer 6

The higher the sample rate and the bit depth the better the playback quality but the more memory consumed.