A digital audio standard established by the Audio Engineering Society and the European Broadcasting Union. The signal is serial digital, comprising two channels. The basic sampling resolution is from 16 to 24 bit, sampled at frequencies between 32 kHz and 192 kHz (44.1 kHz is the most common). Two sets of 4 bits of information are included for other data transmission (one set can be added to the 20 bit of audio, for a 24 bit system). Additional bits are transmitted as well, and the transmitted frames of the interwoven audio channels are grouped to frame blocks.
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