Noise when using "Voice Application Capture"

[Yakitori]

There is noise when capturing the game sound using "Application Audio Capture".
No noise at first. About an hour after the start of distribution or recording, noise appears.
Noise tends to enter when the sound is low and loud.

OS is Windows 11.
OBS version is 29.0.2.

I'm in trouble!
I want to know the solution.

 

[datsuns]

i have the same trouble.

 

[AaronD]

There is noise when capturing the game sound using "Application Audio Capture".
No noise at first. About an hour after the start of distribution or recording, noise appears.
Noise tends to enter when the sound is low and loud.

I'm an audio guy. Mostly Front-of-House for live concerts and churches and, more recently, Broadcast. Different problems sound different, and if that's not enough, analyzing the waveform sample-by-sample can give some clues too. "Noise", with no further qualification, could be anything.

Try this:

1. Install Audacity if you haven't already.
2. Generate, import, or otherwise get into Audacity, a sound that will show the problem well. The closer you can get to a low-freqency sinewave, the easier it will be to analyze later, provided that it actually does produce the problem.
3. Set Audacity to play other tracks while recording, and to record OBS's Monitor to a new track.
4. Set OBS to use Audacity as an Application Source, and send it through the Monitor back to Audacity.
5. Record in Audacity, make sure that it's getting something from OBS, and let it run for long enough that the problem shows up.
6. Stop recording, and cut it down so that you keep:
   • The start (what it was originally)
   • The point where the problem starts (the transition from "okay" to "bad")
   • The end (how bad it got by the time you noticed)
7. Export that as WAV, and post the WAV file somewhere that we can see.

You might also record from OBS, just to have both versions, but the WAV is easier to analyze because it hasn't been butchered by OBS's compression. It sounds the same, but something like an obvious jump in what should have been a smooth curve won't necessarily look the same.

 

[datsuns]

I'm an audio guy. Mostly Front-of-House for live concerts and churches and, more recently, Broadcast. Different problems sound different, and if that's not enough, analyzing the waveform sample-by-sample can give some clues too. "Noise", with no further qualification, could be anything.

@AaronD thanks for reply. I have already had a recorded file that contains "Noise" sound. But that is not WAV file, movie format (mp4). Is that ok for your analyzing ?

 

[AaronD]

@AaronD thanks for reply. I have already had a recorded file that contains "Noise" sound. But that is not WAV file, movie format (mp4). Is that ok for your analyzing ?

I can still listen to it, and the problem might still be obvious from just that. But if isn't, then the next step of looking at the waveform isn't going to be as useful.