Originally Posted by netudki
So? The point is they are all PCM wrapped into a different encoder to reduce storage size.
Including the uncompressed PCM here along with the DTS HD MA is simply redundant IMO. Having said that I'm not complaining about it, I'm sure it serves some kind of marketing purpose.
It's not redundant and it serves for more than just marketing. If you have equipment without HDMI and without multi-channel analog inputs (receiver) or outputs (Blu-ray player) and are limited only to optical or digital coaxial for surround, the dts-ma allows you to have full bit-rate 1.509 Mbps dts.
PCM 24/96 5.1 over Toslink or DCoax will only output the L/R channels.
If your Blu-ray player > receiver is limited to HDMI 1.2 or less and your player cannot decode dts-ma, you can get PCM surround.
Including both dts-ma and PCM like the Tom Petty discs and now the Rush disc covers all bases and allows all consumers to get the maximum surround fidelity possible through all lossless configurations and through all lossy connection. Simple as that. As Ryan Ulyate pointed out in the Tom Petty thread:
Originally Posted by ryan de topanga
When it came to surround we had enough room to put both PCM 5.1 and DTS HD-MA on the disc. We did it to offer the most options for all the various possible configurations out there.