On May 22, 2007 at 15:02, erock1 said...
Where are you getting this information from? PCM is UNCOMPRESSED
period! Even if the studio mastered a movie at 24/48 (that's
24 bit depth / 48,000 sample rate) and downconverted it
(which most do) to 16/48, you would have lower fidelity
audio but not compressed.
I believe your confusion lies in the difference between
fidelity and compression. Rather than downgrade the 24/48
master audio to lower 16/48 fidelity, some studios have
chosen to losslessly pack or "zip" these audio masters
with DTS-HD MA or Dolby TrueHD. Once unpacked or "unzipped"
by a player or HDMI 1.3 receiver, the resulting output
is a 24/48 LPCM track that is bit-for-bit identical to
the original studio master.
Unless I'm not understanding something in your explanation,
again your information isn't quite correct. We're talking
about audio from HD-DVDs. The reason for using an uncompressed
PCM audio stream is to allow your HD DVD player to decode
the HD audio, convert it to PCM and pass it to your receiver
via multi-channel analog or multi-channel on HDMI (1.1,
1.2 or 1.2a).
No offense meant, but Wkipedia isn't a very reputable
source. Any article that is published on Wikipedia can
be edited by anyone, anytime. Most elementary schools
teach their students not to use Wikipedia as a research
source.
I admit I did get some of my info from Wikpedia. Sorry.
But the part about PCM being lossless only applies to HD-DVD and Blu-ray, doesn't it?
Anyway, I have obviously gone past my expertise of knowledge. But I will try to limit myself from now on. Sorry if I led anyone astray.
I still think Stealth X should use Bitstream, not PCM. Was I at least right about that?
My system does not work properly using PCM on an optical cable. I have no HDMI anything.
Now say I have a standard DVD player hooked up, not a hi def player. Would a PCM signal still be losless? Or is that a whole different story.
