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Sound over HDMI question

post #1 of 13
Thread Starter 
I run my HDMI to my receiver, and then to me screen. I'm wanting to know if there is a way to have the video card send the audio in bitstreem, so that my receiver will show what type of signal it's receiving. It just looks cooler when it says, dobly digital, or DTS, etc. As dumb as it sounds, I hate it just saying multi in for what type of signal it's receiving.
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post #2 of 13
Could you state the brand/model of your receiver?
post #3 of 13
Thread Starter 
Quote:
Originally Posted by TFL Replica;15498042 
Could you state the brand/model of your receiver?

It's a denon 1909. I had the same problem with my old PS3 until the finally updated it to send HD audio using bitstream over HDMI.
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post #4 of 13
I know on mine if I hit the info button and select Audio Decoder it tells me what signal is being sent. It then continues to display it.

Example my Star Trek TNG DVD says Dolby Digital, but my MP3 will say PCM.
Edited by BeerPowered - 10/29/11 at 9:05am
post #5 of 13
Thread Starter 
Quote:
Originally Posted by BeerPowered;15498195 
I know on mine if I hit the info button and select Audio Decoder it tells me what signal is being sent. It then continues to display it.

Example my Star Trek TNG DVD says Dolby Digital, but my MP3 will say PCM.

Do you run your computer out of your video card to your receiver?
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post #6 of 13
Quote:
Originally Posted by bevo;15498355 
Do you run your computer out of your video card to your receiver?

yep
post #7 of 13
Are you trying on your GTX 580?

From anand:

http://www.anandtech.com/show/4008/nvidias-geforce-gtx-580/4
Quote:
NVIDIA slightly revised their display controller for GF110/GTX580; the good news is that HDMI 1.4a is supported, the bad news is that full audio bitstreaming is not supported so it’s the same as it was on the GTX 480: 8 channel LPCM and lossy audio formats like DD+ and DTS.
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post #8 of 13
Thread Starter 
Quote:
Originally Posted by C-bro;15498855 
Are you trying on your GTX 580?

From anand:

http://www.anandtech.com/show/4008/nvidias-geforce-gtx-580/4

I'm using the 570s in my sig.

I'm wanting my receiver to do the decoding, instead of it being done by the onboard cpu. I think that's why it just says multi in, instead of telling me how the reciever is decoding it.
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post #9 of 13
Thread Starter 
Quote:
Originally Posted by C-bro;15498855 
Are you trying on your GTX 580?

From anand:

http://www.anandtech.com/show/4008/nvidias-geforce-gtx-580/4

Just read your link. It answered my question, thanks alot. No bitstreaming. I doubt anygames actually use dolby true HD, or DTS master audio anyway.
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post #10 of 13
Most games have their sound in LPCM, which is both unencoded and uncompressed throughout the entire chain ... so the reading you're getting on your amp is exactly correct, and is exactly what you should want to see. In this case, neither your amp nor your card is doing the decoding, because the signal was never ENcoded wink.gif

There's a few older games I think that actually are encoded (and compressed) using Dolby Digital, and when playing those I suspect you'd get the Dolby Digital readout on your amp, but otherwise ... it's going to be 5.1 LCPM aka Multi-In on Dolby receivers. And that is better than regular DD or DTS.

As you suspected, there are no games (that I know of) that are encoded using Dolby HD or DTS Master so for the time being you should never expect to get the indicator for those when gaming. Those are Blu-Ray specific 7.1 channel encoding formats, and I don't think there's even any 7.1 channel games, in any sound format. And if there ever is, you're most likely going to see a 7.1 channel Multi-In reading on your amp.

And again with this scenario, neither of those proprietary encoding formats is inherently any better than 7.1 LPCM.
Edited by brettjv - 10/29/11 at 12:46pm
    
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