Candidates should be able to:
- explain how sound can be sampled and stored in digital form
- explain how sampling intervals and other considerations affect the size of a sound file and the quality of its playback.
How can sound be sampled and stored in digital form?
A microphone converts sound waves into voltage changes. If a microphone is plugged into a sound card then the voltage can be sampled at regular intervals (the sample rate) and each value converted into a binary number. This digitising of the sound is carried out by the Analogue . . .
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