A coded representation of digital data that is not compressed. Linear PCM spreads values evenly across the range from highest to lowest, as opposed to nonlinear PCM, which allocates more values to more important frequency ranges.
PCM is the usual digital method used for audio playback of music CDs. DVDs have a greater volume so they use Linear PCM, which has a higher sampling rate. Compressed PCM signals are called packed PCM (PPCM).
A non-compressed digital audio format. The DVD specification allows for 16 to 24 bit Linear PCM audio sampled at 48 or 96 kHz