Linear Pulse Code Modulation
From Hydrogenaudio Knowledgebase
LPCM - Linear PCM - is one of the standard audio formats in DVD, next to AC3 and DTS. Unlike the other formats, it's never compressed, and therefore offers the best quality. Also, being an uncompressed format, it doesn't require expensive encoders, therefore being the best option for home made DVDs.
It's always presented in 48kHz, and Stereo. Data rate limitations in the DVD format don't allow it to be used for Multichannel audio.
