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In digital recording audio signals picked up by the microphone are converted into a stream of discrete numbers representing the sound wave, then recorded to a storage device.

To play back a digital sound recording, the numbers are retrieved and converted back into their original analogue waveforms so that they can be heard through a loudspeaker.

As the audio is stored as a series of numbers it is possible to make multiple copies without degrading the original file.

If some of the numbers become corrupted you may hear a glitch on playback.


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