nVidia Audio over DVI>HDMI Problems

[LIGISTX]

I recently got a new home theater system, and I am tying to output audio from my gtx 460 in my HTPC to my Sony receiver. The way I have it all plugged in is DVI to HDMI converter, then HDMI to my receiver. I have 5.1, with my sub on LFE. 

 

For the life of me, I don't understand why this doesn't just work right. If I leave windows on stereo mode, music is great, the receiver makes all the audio go to all channels, and my sub is working GREAT! But if I put windows into 5.1 mode, my sub 100% stops working, and my rear audio isn't working right. Its like it is combining both rear channels into each other. Like for instance, I have only 1 rear speaker plugged into my receiver, and rear right and rear left comes out of it when I do the windows test. 

 

My motherboard does have optical out, but that compresses audio and I don't really want that/not even sure if that will work right either. If it would help, I could buy a mini HDMI to HDMI so I can bypass the use of the DVI adapter, but I don't think this should matter. I am pretty new to audio, but this really shouldn't be this hard. I wish I just had a PS3, pretty much plug and play from my experience.

 

I could also route my front left and right through my sub so it can do its own crossover frequency settings and what not which technically should work as well, but that isn't the way I think it should be done. Why have a nice receiver and not really use it to its full capacity. 

 

I have tested this with 5.1 Movies, as well as the THX test audio on their website. With 5.1 in windows enabled, sub doesn't do anything :(

[defunkt]

DVI doesn't transmit sound. Only HDMI and DP.

[felixbearpig]

Why are you using a gpu as a sound card and dvi does not transfer sound no matter if it gets converted to hdmi down the line.

[LIGISTX]

Um, it definitely caries sound.. lol. If you use the nvidia adapter, it outputs sound, trust me, tech n9ne isn't coming out of thin air right now ;). 

 

And I am planning to use the GPU because why not... thats the entire reason they put the features in there. Get video and audio out of the video card, no need for extra wires. 

[LIGISTX]

And I magically fixed it. No idea what changed, but now it seems to be working. 

[Limey]

Dvi does not transfer sound. HDMI does

[solomongrundy]

Did the dvi - hdmi adapter come with the videocard? If so, then it's a proprietary thing that Nvidia did to shoot audio over DVI using their adapter.

 

To answer your question, you are sending a 5.1 signal to your receiver...the receiver is expecting a 5.1 audio to be played through it. When you play  stereo music, it just plays it through the left and right speakers because the other channels are blank. Selecting stereo in Windows enables DSP mode within the receiver that allows it to "upconvert" audio to all the different channels.  I'm not sure about your other question on why your rear speakers aren't playing the sound test properly....probably a screw up within the receiver settings.

 

If you want your receiver to do the decoding of Dolby Digital, DTS, etc, you need to bitstream the audio. I use MPCHC (http://www.free-codecs.com/download/media_player_classic_home_cinema.htm) You need to go into the audio filters and enable that option.

 

By the way, what's your receiver model?

 

I recently got a new home theater system, and I am tying to output audio from my gtx 460 in my HTPC to my Sony receiver. The way I have it all plugged in is DVI to HDMI converter, then HDMI to my receiver. I have 5.1, with my sub on LFE. 

 

For the life of me, I don't understand why this doesn't just work right. If I leave windows on stereo mode, music is great, the receiver makes all the audio go to all channels, and my sub is working GREAT! But if I put windows into 5.1 mode, my sub 100% stops working, and my rear audio isn't working right. Its like it is combining both rear channels into each other. Like for instance, I have only 1 rear speaker plugged into my receiver, and rear right and rear left comes out of it when I do the windows test. 

 

My motherboard does have optical out, but that compresses audio and I don't really want that/not even sure if that will work right either. If it would help, I could buy a mini HDMI to HDMI so I can bypass the use of the DVI adapter, but I don't think this should matter. I am pretty new to audio, but this really shouldn't be this hard. I wish I just had a PS3, pretty much plug and play from my experience.

 

I could also route my front left and right through my sub so it can do its own crossover frequency settings and what not which technically should work as well, but that isn't the way I think it should be done. Why have a nice receiver and not really use it to its full capacity. 

 

I have tested this with 5.1 Movies, as well as the THX test audio on their website. With 5.1 in windows enabled, sub doesn't do anything :(

[LIGISTX]

Did the dvi - hdmi adapter come with the videocard? If so, then it's a proprietary thing that Nvidia did to shoot audio over DVI using their adapter.

 

To answer your question, you are sending a 5.1 signal to your receiver...the receiver is expecting a 5.1 audio to be played through it. When you play  stereo music, it just plays it through the left and right speakers because the other channels are blank. Selecting stereo in Windows enables DSP mode within the receiver that allows it to "upconvert" audio to all the different channels.  I'm not sure about your other question on why your rear speakers aren't playing the sound test properly....probably a screw up within the receiver settings.

 

If you want your receiver to do the decoding of Dolby Digital, DTS, etc, you need to bitstream the audio. I use MPCHC (http://www.free-codecs.com/download/media_player_classic_home_cinema.htm) You need to go into the audio filters and enable that option.

 

By the way, what's your receiver model?

Yea it came with my video card, and actually I got it all working. Thanks tho!