Sound is transferred from analogue to digital.
Analogue audio is the compression and rarefaction of air molecules received by the human ear or microphone, the molecules then move which then causes the diaphragm of the microphone to move in and out sending signals to the audio interface which is the converted to digital information. Once the computer receives this information, it can then be distributed, once it is distributed and played back, it is converted back into an analogue signal which causes the speakers to vibrate due to sound waves vibrating causing the eardrums to move.
Frequency is the cycles of sound waves per second.
Amplitude is how low or loud the sound is.
Digital audio is the representation of analogue audio in the computer.
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