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Old 06-05-2008, 08:24 PM
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Default Question about PS3 audio output...

OK, so I have my PS3 outputting through Toslink to a receiver that only does DTS and Dolby Digital. So here's my question. When you set up the PS3's audio output and tell it to output as DTS and Dolby Digital (depending on what's available), will it convert uncompressed PCM to DTS? I was trying to do this with Ratatouille on Blu-ray set to PCM output and my receiver was only showing it as running the Dolby emulated surround sound. I switched the audio track to Dolby Digital and it output it just fine as DD 5.1 surround. DTS on DVD's outputs just fine as DTS 5.1 surround. Also, do movies with DTS-MA come with a standard DTS track to select from? If so, that would be great! Either way though, 640 kbps DD sounds much better than 448 kbps DD like on standard DVD's, so it is an upgrade regardless. The Blu-ray Dolby Digital is almost as good as the DVD's standard DTS, and in many cases I am sure it's almost unnoticeable. So no matter what I am in good shape. But I am curious to see if I can pull off a DTS output at 1.5 Mbps from the PCM source. Thanks for any help.
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Old 06-06-2008, 09:01 AM
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Nope. If your sound setup doesn't support PCM 5.1 then it'll only play in stereo (that's the case for me).

DTS-HD will be down sampled to DTS. TrueHD will be down sampled to DD. Both still sound great on current setups.
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Old 06-06-2008, 10:16 AM
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DTS HDMA includes a 1.5 Mbps "core" track for when users cant playback the full hd audio. Josh Z's article on hd audio covers it all really well.
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Old 06-06-2008, 10:44 AM
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Quote:
Originally Posted by holsty101 View Post
DTS HDMA includes a 1.5 Mbps "core" track for when users cant playback the full hd audio. Josh Z's article on hd audio covers it all really well.
Yes, you will get the core track out of the DTS HD MA through the toslink but you will not get a DTS track out of a PCM-source. It will continue to be PCM and because toslink can't transmit more than PCM 2.0 you will only get stereo from a PCM-sound track then using a toslink cable.
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Old 06-06-2008, 11:16 AM
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Im pretty sure my BDs that have uncompressed do not go to stereo...I will check tonight.
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Old 06-06-2008, 03:07 PM
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Originally Posted by Merlins View Post
Yes, you will get the core track out of the DTS HD MA through the toslink but you will not get a DTS track out of a PCM-source. It will continue to be PCM and because toslink can't transmit more than PCM 2.0 you will only get stereo from a PCM-sound track then using a toslink cable.
Yeah, I know dude. But seeing as that's basically what Night Stalker (can't be bothered to do the leet speak shit :-#) said I didn't see the point in repeating it. I was just trying to add some clarification re redfirebirds dts ma question mid paragraph & chuck in the link to article Josh wrote (which I thought would've cleared up an confusion he had over dts/pcm/blahblahblah).

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Originally Posted by SLARITY View Post
Im pretty sure my BDs that have uncompressed do not go to stereo...I will check tonight.
I've not looked up what modes your receiver has, maybe it's doing a pro logic/2 number on the stereo signal?

Quote:
Originally Posted by Josh Z's HD audio article
PCM -
Toslink or Coaxial SPDIF - SPDIF does not have enough bandwidth to carry a full 5.1 PCM signal, so the audio track will be downgraded to 2 channels only.

Last edited by holsty101; 06-06-2008 at 03:33 PM. Reason: SLARITY quote/reply
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Old 06-06-2008, 06:37 PM
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Thanks a lot for the explanation y'all! Much appreciated.

So, DTS-MA = DTS @ 1.5 Mbps
PCM = 2 channel audio only over optical
Dolby TrueHD = DD5.1 @ 640 kbps

Sounds cool to me. I am looking forward to watching some Fox titles with DTS-MA. I wish every Blu-ray came with DTS-MA just like I wish every DVD came with DTS.
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Old 06-06-2008, 11:35 PM
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Quote:
Originally Posted by redfirebird2008 View Post
Thanks a lot for the explanation y'all! Much appreciated.

So, DTS-MA = DTS @ 1.5 Mbps
PCM = 2 channel audio only over optical
Dolby TrueHD = DD5.1 @ 640 kbps

Sounds cool to me. I am looking forward to watching some Fox titles with DTS-MA. I wish every Blu-ray came with DTS-MA just like I wish every DVD came with DTS.
Pretty much. Optical can't transport PCM 5.1 fully since it doesn't have the bandwidth to do so. That's why HDMI was invented and newer sound systems should have that capability.
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Old 06-06-2008, 11:57 PM
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Quote:
Originally Posted by ni9ht_5ta1k3r View Post
Pretty much. Optical can't transport PCM 5.1 fully since it doesn't have the bandwidth to do so. That's why HDMI was invented and newer sound systems should have that capability.
I wasn't expecting or wishing for it to transport it fully. I was hoping that it would convert it to DTS and then transport that instead of the PCM. Oh well though, even regular Dolby Digital sounds better on Blu-ray than it did on DVD.
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Old 06-07-2008, 12:07 AM
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I too, when Casino Royale came out, that Sony would release a FW update for the PS3 that would convert PCM 5.1 to DTS 5.1 on the fly. But DTS-HD core track does a better job I think and my solution is just to turn up the volume.
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