Why can't any motherboards bitstream DTS-HD and when will this be available?

3075 Views 13 Replies 9 Participants Last post by diablosv, Jul 19, 2009

m0tion

Discussion Starter · Jul 16, 2009

I've done a fair amount of looking on this forum and otherwise and I don't currently understand what the technical limitation is that prevents current motherboard chipsets from being able to bitstream Dolby TrueHD and DTS-HD MA. Also, I haven't heard of any products touting this ability on the horizon. Can anyone shed some light on these two topics for me? This has to be a thorn in the side of most HTPC owners at this point. I'm aware of the Asus and Azuntech card, but it seems like too much money for either of them...

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jrwalte

· #2 · Jul 16, 2009

You may thank the movie industry. They want the protection on the discs that has strict requirements that must be met to 'unlock' it. It's still too new for most PC component companies to spend the money to develop the necessary components to meet the protection requirement.

Asus Xonar HDAV Slim isn't bad at all to me, at around $140-150. I'd already have one if I didn't also have to spend another $400-600 to get a receiver that supports it, over my old 48Khz DD, DTS receiver.

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sotti

· #3 · Jul 16, 2009

There is also a hardware issue, the HDMI encoder chip has to support bitstreaming (HDMI 1.3 required, but 1.3 doesn't mean bitstreaming hardware is present).

Then you have to have some cryptographic hardware to support PAP if your want it to work with commercial BD Software.

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James_stewart

· #4 · Jul 16, 2009

what exactly are the quality improvements with DTS-HD over basic DTS?

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jrwalte

· #5 · Jul 16, 2009

Quote:
Originally Posted by James_stewart /forum/post/16837572

what exactly are the quality improvements with DTS-HD over basic DTS?

24-bit 192KHz audio compared to 16-bit 48KHz audio. It's about clearer, cleaner, better sounding audio. I haven't heard it myself to tell the difference, but being the audiophile I am, I'm sure I would. That's why I'm staying away from the presentation rooms or I'd have a big bill next month

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sotti

· #6 · Jul 16, 2009

Quote:
Originally Posted by James_stewart /forum/post/16837572

what exactly are the quality improvements with DTS-HD over basic DTS?

DTS = 5.1 (6.1 for ES) 16bit/48khz audio compressed to a maximum of 1.5mbps

DTS-HD MA = up to 7.1 and up to 24b/96khz audio with lossless compression

basically the difference between an MP3 and a SACD.

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James_stewart

· #7 · Jul 16, 2009

Quote:
Originally Posted by jrwalte /forum/post/16837596

24-bit 192KHz audio compared to 16-bit 48KHz audio. It's about clearer, cleaner, better sounding audio. I haven't heard it myself to tell the difference, but being the audiophile I am, I'm sure I would. That's why I'm staying away from the presentation rooms or I'd have a big bill next month

wow. i know what you're saying. I remember the first time I listened to my friend's $900 cd player hooked into his sound system. I was shocked at the clarity. Next month I had some explaining to do to my wife.

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steven975

· #8 · Jul 17, 2009

well, I'm not sure there are may 24/96Khz BD movies. All of my movies are 16/48 or 24/48 DTS-HD. The only thing that has ever been 24/96 was the DTS-HD intro clip on LionsGate movies.

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griffy_nz

· #9 · Jul 17, 2009

get TMT 2 and try replacing the audio .ax file like I posted...lossless PCM (decoded DTS MA/DolbyHD and right at ya PCM) no downsampling here mate...and no US$200 sound card (yet) just ATI HDMI so far

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m0tion

Discussion Starter · #10 · Jul 17, 2009

griffy:

Like you posted where?

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griffy_nz

· #11 · Jul 17, 2009

http://www.avsforum.com/avs-vb/showt...&highlight=fix

here

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sneals2000

· #12 · Jul 17, 2009

Quote:
Originally Posted by steven975 /forum/post/16838148

well, I'm not sure there are may 24/96Khz BD movies. All of my movies are 16/48 or 24/48 DTS-HD. The only thing that has ever been 24/96 was the DTS-HD intro clip on LionsGate movies.

AIUI the Japanese re-master of Akira has 192kHz and 20 or 24 bit audio?

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jmystikcfl

· #13 · Jul 19, 2009

Quote:
Originally Posted by steven975 /forum/post/16838148

well, I'm not sure there are may 24/96Khz BD movies. All of my movies are 16/48 or 24/48 DTS-HD. The only thing that has ever been 24/96 was the DTS-HD intro clip on LionsGate movies.

I thought the Dave Matthew and Tim Reynolds live Blu Ray was DTS-HD 24/96.

Edit: Sorry, it's Dolby TrueHD 24/96

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diablosv

· #14 · Jul 19, 2009

I am personally hoping for a videocard that does it, the HD4000 series comes close but no PAP present

.

But the funny thing is once it is implement as a standard feature in mobos and videocards then these xonar HDAV cards will kinda be redundant... well the sllim would be pretty much.

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