7.1 Dolby TruHD downmixed to 5.1? - Blu-ray Forum

mainman · 02-02-2008, 10:32 PM

This article about the PS3 states the following:

Quote:

"Bitstream"ing of Dolby TrueHD audio is currently not supported on the PS3. The PS3 must decode the signal internally and only the HDMI cable is supported. In addition, 7.1 channels are downmixed to 5.1 channels of Linear PCM. TOSLINK not supported because of bandwidth issues.

Also, I didn't know PS3 supported DTS-HD, and can DTS-HD use TOSLINK????:

Quote:

dts-HD High Resolution Audio (dts-HD HRA) is a lossy format and is supported in the PS3. However decoding is supported for both "bitstream" and "Linear PCM" in the PS3. dts-HD HRA is dts Digital Surround (the Core) plus any extra frequencies or channels up to 7.1. However, the PS3 will downmix 7.1 channels to 5.1 channels before sending it down the HDMI or TOSLINK. If selecting "Linear PCM", TOSLINK can only ouput stereo channels.

http://www.edepot.com/playstation3.html

turboLAZER · 02-02-2008, 10:48 PM

there is no need to downmix a Dolby TrueHD 7.1 to 5.1 . because Dolby TrueHD doesn't currently have any 7.1 movies. all current Dolby TrueHD movies are 5.1

http://www.blu-raystats.com/stats.php?OrderBy=Audio

PS3 does support DTS HD, but not DTS HD Master Audio

mainman · 02-02-2008, 11:00 PM

Quote:

Originally Posted by turboLAZER

there is no need to downmix a Dolby TrueHD 7.1 to 5.1 . because Dolby TrueHD doesn't currently have any 7.1 movies. all current Dolby TrueHD movies are 5.1

http://www.blu-raystats.com/stats.php?OrderBy=Audio

PS3 does support DTS HD, but not DTS HD Master Audio

I figured there were not TrueHD 7.1 movies, but that's not really the point.
If there ever would be a 7.1 TrueHD movie released, what would happen when played on a PS3, downmix to 5.1 or will it be 7.1? Same question applies to 7.1 LPCM.

I didn't know DTS-HD was supported, because I didn't see the logo on the PS3. Just the regular DTS logo (no HD imprinted).
And is DTS-HD possible over TOSLINK? Or is DTS-HD only available via HDMI?

turboLAZER · 02-02-2008, 11:14 PM

Quote:

Originally Posted by mainman

I figured there were not TrueHD 7.1 movies, but that's not really the point.
If there ever would be a 7.1 TrueHD movie released, what would happen when played on a PS3, downmix to 5.1 or will it be 7.1? Same question applies to 7.1 LPCM.

I didn't know DTS-HD was supported, because I didn't see the logo on the PS3. Just the regular DTS logo (no HD imprinted).
And is DTS-HD possible over TOSLINK? Or is DTS-HD only available via HDMI?

7.1 LPCM is currently supported with the PS3. If a DolbyTrueHD 7.1 were to come out, I assume that the internal decoder would decode all 8 channels of audio and then send it to the audio receiver via HDMI, but we won't know for sure until we actually see a Dolby TrueHD 7.1.

The PS3 is capable of processing a DTS HD hi res (1500kbps of compressed audio, not lossless) which is less compression compared to a regular DVD DTS audio(around 750 kbps)

reiella · 02-03-2008, 02:40 AM

Hmm, interesting, really curious as to how they determined the 5.1 support regarding Dolby TrueHD.

[ Add / Edit ]
Especially, since Dolby labs claims the PS3 supports 7.1 Dolby TrueHD.

saprano · 02-03-2008, 10:53 PM

wow! i had no idea ps3 supported dts-hd hi res, much less bitstream it?

are you guys sure?

saprano · 02-03-2008, 10:56 PM

yo crackinheads where are you? i need you

ccplant · 02-03-2008, 10:59 PM

Quote:

Originally Posted by mainman

This article about the PS3 states the following:

Also, I didn't know PS3 supported DTS-HD, and can DTS-HD use TOSLINK????:

http://www.edepot.com/playstation3.html

No lossless audio can go through toslink optical. All will be downmixed to 2.0.
I'm not to sure about bitstreaming, but I'm sure you can't do it toslink, only through hdmi.

Opips2 · 12-29-2008, 02:37 AM

7.1 LPCM is currently supported with the PS3 for Dolby True HD 7.1(Muiltchannel LPCM 7.1)

and

bitstreamed is currently supported with the PS3 for DTS MA 7.1 (not working LPCM)

cartman781 · 12-29-2008, 02:39 AM

Quote:

Originally Posted by Opips2

7.1 LPCM is currently supported with the PS3 for Dolby True HD 7.1 (only 5.1)

and

bitstreamed is currently supported with the PS3 for DTS MA 7.1 (not working LPCM)

PS3 does not bitstream any lossless codecs.

Opips2 · 12-29-2008, 02:53 AM

Quote:

Originally Posted by cartman781

PS3 does not bitstream any lossless codecs.

you're right!

I'm not sure...My HK AVR-254

i'm make of mistake! I tried put "Hellboy II" to my PS3 LPCM DTS HD 7.1 is working!

My receiver is LPCM mulitchannel.

How I find to a BR movie code True HD Dolby 7.1? please...

Opips2 · 12-29-2008, 03:45 AM

bump! I have a HDMI 1.3 certified cable!

BIslander · 01-01-2009, 08:16 PM

Quote:

Originally Posted by Opips2

How I find to a BR movie code True HD Dolby 7.1? please...

The Nightmare Before Christmas is the only one, I think.

02-02-2008, 10:48 PM	#2
turboLAZER Active Member Member since:May 2007 Home Theater Gallery:9 Blu-ray collection:63	there is no need to downmix a Dolby TrueHD 7.1 to 5.1 . because Dolby TrueHD doesn't currently have any 7.1 movies. all current Dolby TrueHD movies are 5.1 http://www.blu-raystats.com/stats.php?OrderBy=Audio PS3 does support DTS HD, but not DTS HD Master Audio Last edited by turboLAZER; 02-02-2008 at 10:51 PM.

12-29-2008, 03:45 AM	#12
Opips2 Special Member Member since:Nov 2008 Location:Edmonton, AB Home Theater Gallery:6 Blu-ray collection:175 Blu-ray reviews:10 Trading Score:1	bump! I have a HDMI 1.3 certified cable! Last edited by Opips2; 12-29-2008 at 03:48 AM.

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Opips2 Special Member Member since:Nov 2008 Location:Edmonton, AB Home Theater Gallery:6 Blu-ray collection:175 Blu-ray reviews:10 Trading Score:1	7.1 LPCM is currently supported with the PS3 for Dolby True HD 7.1(Muiltchannel LPCM 7.1) and bitstreamed is currently supported with the PS3 for DTS MA 7.1 (not working LPCM)

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