Originally Posted by Neoguri
Watched X3 last night using DTSMA and it sounded awesome.
Is there any reason why some blurays include both LPCM and TrueHD tracks if they are identical?
For concert nowadays, it is a Dolby TrueHD 5.1 mix plus a Stereo 2.0 PCM so everyone can get some sort of lossless depending on their hardware (or some people prefer stereo music to surround).
Also when both included, usually the TrueHD track is 20/24 bit while the PCM is 16bit (Spiderman 3, Ghost Rider, Fifth Element). There are few cases where Warner added PCM and Dolby TrueHD (300) so everyone could get lossless out of their players.
PCM is almost dead.
Sony has switched to Dolby True HD. Sony BMG uses PCM for stereo only. Fox uses DTS-MA. New Line uses DTS-MA. Warner uses Dolby TrueHD. Nobody knows what Universal and Paramount are going to use but considering their history, it probably will be Dolby TrueHD.
The only PCM supporter now is Disney but they have also announced (and released) movies with Dolby TrueHD.