Originally Posted by ap1
...So I see three possible cases:
1. Receiver is not capable to accept 7.1 PCM @ 96kHz
2. Player can not decode DTS-MA HD with samples at more than 48kHz
3. Something is wrong in audio track structure, which prevents BD60 from decoding it correctly...
Well I got a hold of that Tchaikovsky Piano Concertos "Blu-ray Disc" from Surround Records. I use "Blu-ray Disc" in quotes because it is actually an AVCHD Dual Layer DVD with only an audio track (no video), but it is in fact a DTS-HD MA 7.1/24/96 recording and there definitely is something amiss when trying to decode it on the Panasonic players.
On the BD70V (same DTS-HD Essential chip set as BD60 and BD80), in bitstream mode the player passes the stream properly to a receiver via HDMI and all is well (DTS-HD MA 7.1/96/24). But the very first time I played it on the BD70V in PCM output mode (internal decoding), it put out a 32 Khz sampling rate. That only happened once. From then on, it was putting it out as PCM 7.1 with 48 KHz sampling.
Just for giggles, I tried this same AVCHD disc in two other players - a LG BD390 -- got no audio at all, in passthrough mode, multi-channel PCM, DTS Re-Encode or stereo PCM -- and in a Samsung BD-P2500 -- first no audio in any mode, then nasty static noises in PCM mode, then finally a trouble-free bitstream in bitstream (audiophile) mode.
So of the 3 players, the Panasonic was the only one that could decode the DTS-HD MA 7.1/96/24 stream *AT ALL* and it decoded it at 48 Khz. I guess there may be a reason why there are only two commercial "Blu-rays" on the market that use DTS-HD MA 7.1 channel 24-bit 96 Khz encoding. Seems to me that none of the current player hardware is able to reliably decode it to PCM. I did try it on an OPPO BD-P83 as well but this is currently not plugged into a receiver (only to an 8500 series Samsung LED/LCD) so, while I did get sound, I can't tell whether it's truncating the sampling rate or not.
Meanwhile, the Panny does properly decode DTS-HD MA 5.0, 5.1 at 24/96 as well as DTS-HD MA 7.1 at 24/48. It also has no problem with Dolby TrueHD 7.1/24/96 - this is specific to DTS-HD MA 7.1/24/96 and only when decoding internally to PCM. Setting the Panasonic to bitstream passes the soundtrack properly to a compatible receiver.
I'm going to play around with this a bit more, but it looks like right now DTS-HD Master Audio 7.1 soundtracks with 24-bit samples 96 KHz sampling are problematic for several players, and this might account for why there is no software on the market encoded this way. Good catch! But of limited impact right now considering the dearth of software.