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In Reply to: RE: cha-ching! posted by Joe Murphy Jr on April 10, 2008 at 22:08:23
That's really nice, Joe.
For those of us who haven't yet gotten a receiver/processor, do you have a feel for whether PS/3 actually outputs TrueHD / DTS HD MA via the HDMI connection, or whether it transcodes to PCM? I was under the impression that it could only do the latter? Among other things, I was toying with the idea of getting a Rotel receiver, but thought I'd have to wait for the next product refresh or two in order to get full-quality lossless audio from the PS/3.
Follow Ups:
For the PS3, the lossless audio codecs are decompressed (ie, decoded) internally and output as multichannel PCM via HDMI or 2-channel PCM via the optical output and the D/Aed analog output.
There are a few people who still cling to the notion that the PS3 will be firmware updated to output the lossless audio codecs as bitstream (uncompressed, undecode), but that's not going to happen. The HDMI chip used in the PS3 is hardware, not software, limited in the sense that it cannot bitstream the advanced audio codecs. To do this would be like converting a gasoline car to a hybrid through a firmware update via the car's on-board computer system.
Due to the existing chipset design, the PS3 cannot output DTS HD MA as bitstream. To simplify things, I have it set to do all decoding internally.
-------------Call it, friendo.
I've just got a PS3 and my Denon 2807 won't decode the new formats so I have to use PCM output anyway. I've tried comparing the results with the PS3 decoding standard Dolby/DTS tracks and sending PCM to the Denon, and bitstreaming to the Denon and letting it do everything. I can't hear a difference and I'm normally happy to leave the PS3 set to PCM. The only time I swap the setting to bitstream is with DTS ES discrete 6.1 channel soundtracks which the PS3 decodes to 5.1, dropping the rear channel and the only reason I worry about that is that I have a 6.1 channel system and the reason I added the extra channel was for those tracks.
I can't compare results with bitstream vs PCM for the new formats but I doubt there'd be a difference with them either. In theory I think it shouldn't make a difference where the decoding takes place provided the device decodes to PCM accurately and that's a totally digital operation. I think the real differences in sound quality come with the DA conversion and how well that's done, and 4season isn't talking about changing the location of that activity.
David Aiken
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