Digital audio

Sounds created on a computer exist as digital information encoded as audio files.

Flowchart of how sound input to a microphone goes through an analogue to digital convertorSound input through a microphone is converted to digital for storage and manipulation

Digital sound is broken down into thousands of samples per second. Each sound sample is stored as binary data.

Digital audio quality

Factors that affect the quality of digital audio include:

  • sample rate - the number of audio samples captured every second
  • bit depth - the number of bits available for each clip
  • bit rate - the number of bits used per second of audio

A sound engineer illustrates how different factors can affect the quality of digital audio