Representing sound in a computer

sounds and its signals

a computer captures sound with a transducer, this captures the pressure wave created by sound and produces an electrical voltage or current that varies in proportion to the sound pressure

Conversion of signal, this is one using an ADC(analogue to digital converter)or DAC (digital to analogue converter)when converting, the process going on is called PCM(pulse code modulation), this part, measuring is called PAM(pulse amplitude modulation)