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techreportjbf, sound is turned into binary code, convert sound samples to numbers (bits) with on off switches (binary code), the sampling rate must be equal or greater than twice the frequency in the analog signal., the nyquist theorem, recreate the waveform, cleans sound works better when sampling rate is higher, microphone - adc - (bundles of wires) processing storage (bundles of wires) - dac - filter - speaker, analogue to digital converter and digital to analgoue converter, if the frequency is 20khz, the sampling rate must be 40khz, the greater the sampling rate, the truer the sound. , less distortion, less delicate than analogue equipment, less expensive than analogue recorders today, cds are more durable than lps, analogue vs. digital recording