Any idea where to start troubleshooting this HDMI bug?

[sochee]

My chain is currently like this:

Nvidia 780Ti -> HDMI -> Panasonic TC-P42S60 -> SPDIF out to EMU 0404 USB -> RCA to amp

My problem with this is that when playing anything through the TV (mp3, flac, movies, etc.), there is a small static noise every few seconds, almost rhythmic. Yet, when I change the Nvidia 780Ti to a Macbook (keeping every other part of the chain identical, even the HDMI cable used), the sound goes away with the exact same source files. So I'm convinced this has something to do with the 780Ti output, but I haven't been able to find anything anywhere on why this might be. Any ideas where to start looking?

 

[Destiny]

Try connecting HDMI directly to AMP, and have the AMP's HDMI output go to your TV?

 

[sochee]

Try connecting HDMI directly to AMP, and have the AMP's HDMI output go to your TV?

Sorry, can't, the amp/receiver is an old analog stereo 2.1, only RCA ins and speaker outs on it. Sorry if this is the wrong place to post this, maybe I should have posted this in a more AV-oriented forum, I'll try reposting this in the HTPC forum.

 

[sxr7171]

I don't install Nvidia audio drivers. I had a bad experience once. I just stick with the windows supplied ones.


Also I would make sure windows audio settings are set to stereo with sub. That shouldn't be the cause but it's better to make sure it's set correctly.

 

[Attic]

From Control Panel ---> Sound

Check your output device, most like the name of the TV, and select "Properties"
--note here on the output device, depending on if the TV is on or not when the computer boots you may see different output devices, see if you can get the output device regonized as the amp and/or the tv based on power on timeline of devices down your audio chain.

On the far left tabs check default format to 16bit/48khzand try other settings if that is already selected. There are a few other settings here to mess with to see if it alleviates the distortion.

 

[sochee]

I'm an idiot - went back to the Macbook again just to be sure (has been a while since I tested it), and the crackling is there too. Checked the amp using purely analog input, and checked the EMU DAC with another digital source, both showed no crackling, so I'm guessing it has to do something with the TV's digital out, which is coincidentally the newest part of my chain. Sorry for wasting everyone's time.