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In Reply to: RE: Uncompressed PCM posted by oscar on August 25, 2007 at 16:13:32
>>There is nothing technical holding back the Studios from releasing lossless audio tracks on Blu-ray movies. <<
Here's something I've wondered about, and I hope someone knows the answer:
The standard for cinema films for many years now has been matrix and/or compressed, lossy soundtracks (Dolby SR, Dolby Pro Logic, Dolby Digital, DTS, etc.).
So, if that's what's on the majority of commercial films that have been produced in the past 20+ years, how do you get a lossless soundtrack from that?
Follow Ups:
The digital soundtracks in theaters have indeed been lossy versions. However, DTS actually has a system in some theaters that will deliver a losslessly-encoded bit-for-bit copy of the original soundtrack. This DTS system is only available in a very limited number of theaters (that famous theater in San Francisco is one of them).
The master that is used to create the lossy soundtracks you hear in theaters is usually a 24/48, 24/96, 20/48 or 20/96 PCM recording. So while you only get a lossy soundtrack in nearly every commercial theater, your home theater can actually present, via Blu-ray or HD DVD, a higher fidelity version than the "cram ten screens in a building the size of a gas station" local multi-plex.
What are you utilizing for the audio output from your PS3, basically which equipment and which audio track? Just curious at this point.
Maybe you can help me out with the following. I'm planning to get a rather cheap Onyko SR 605 AVR that folks have been utilizing for lossless but I'm unsure if it would work in my case. I would be doing a component connection from the PS3 to my display which is only capable of 1080i at this point, no HDMI available on the display. I'd run HDMI from the PS3 to that Onkyo AVR. Is this a option viable for lossless in this case? TIA!
The Onkyo 605 can handle decodes of the lossless formats, but no one can pass them to it at this time. The PS3 can send uncompressed multi-channel PCM via its HDMI port, but at the moment it can't -- and probably never will -- send the lossless formats undecoded via HDMI (ie, the lossless format can be decoded and then sent as uncompressed PCM like it does for Dolby TrueHD right now and will possibly do for DTS-HD MA in the future).
I don't know if the PS3 will do analog video at 1080i and simultaneously provide the same via HDMI (if I had to bet, I'd say it can). Check at AVS Forum: I'm sure the answer is there.
Also, check the threads on the Onkyo 605. I haven't read them in a few weeks, but I believe a few people had problems with a "popping" or "crackling" sound with this model. It may have been certain serial numbers or it may have been widespread -- I can't remember.
Right now I have my PS3 set to 1080i hooked up to my 6UY 50" Panasonic plasma via an HDMI-DVI cable. Unfortunately, at this time my audio -- 2-channel analog -- is being sent directly to the plasma via the A/V multi-connector. Please don't ask why.
Some of the threads generate a couple hundred posts. I'll just post a message there. I rather not buy and test on my end. Hopefully I can get an answer to my request for info.
I believe some of the 605s were recalled. The retailer I'm dealing with is waiting for a new shipment.
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