Linear PCM is an uncompressed audio format. It can have up to8 channels of audio at48khz or96khz sampling frequency and16, 20 or24 bits per sample. It has a maximumbitrate of a huge6.144 MB/s. It's also known asLPCM.

On DVDs there are several audio formats that can be used. You may see AC3 (akaDolby Digital),LPCM (uncompressed),MPA (MPEG-Audio), orDTS (Digital Theater Surround).

Mandatory formats for DVD differ forPAL andNTSC discs. For PAL the mandatory formats are MPA, AC3, and LPCM. For NTSC they're only AC3 and NTSC. Every disc must include at least one mandatory audio format.

HD DVD andBlu-ray also have mandatory audio formats. For HD DVD, mandatory formats are AC-3, LPCM,Dolby Digital EX, DTS, Dolby Digital Plus, andDolby TrueHD. For Blu-ray they're the same, except that Dolby TrueHD is optional instead of mandatory.

Ogg Media also supports the standard for its codec, as does VC-1 and MPEG-4 AVC.

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