A CDE Definition
high-resolution audio categories
Following are the four "Master Quality" (MQ) categories of high-resolution audio, which were formalized by the major record labels in 2014. See high-resolution audio, PCM, analog, CD and DSD.
Category Sound Source
MQ-P PCM (minimum 48 kHz/20 bit)
MQ-C Compact Disc (CD)
MQ-D DSD/DSF (2.8/5.6 MHz)
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