Bug Report Push-to-talk messing up microphone audio

A

Ariya

New Member
Dear Developers and Forum Members,

First of all, I'd like to say hello since I've just joined this forum and this is my first post here.
I've been using Classic OBS for a pretty long time without any issues and today I've decided to
give OBS Studio a try.

I've noticed that OBS Studio introduces strange noise to microphone recordings when using
the "push-to-talk" option. It's not present when the mic is on constant capture nor when
I've tried it in Classic OBS. I've tried different key-binds but the result is the same. Also tried
32 bit and 64 bit versions of OBS Studio, both having the same issue.

I'm using Audio Technica AT2020 USB microphone. My sampling rate is 44,100 Hz, 1 channel, 16 bit.
In OBS Studio my settings are also 44,100, stereo and 128 kbit for each track.

System: Windows 8.1 Home

I've recorded three mp4 files with a few seconds of sound in OBS Studio with push-to-talk enabled and disabled as well as in OBS Classic with push-to-talk enabled. Uploaded to my Google Drive, since the forum size limit is 1 MB.

https://drive.google.com/file/d/0B4bsnj_G9Q7iWXJhUVhqMDJZSmM/view?usp=sharing

I really hope you can help me solve this problem.

Yours faithfully,

Ariya
 
A

Ariya

New Member
However, even if I import and listen to it in Premiere, the sound distortion is still present.
 
A

Ariya

New Member
What baffles me is that why do I get distorted sound when I use push-to-talk and perfectly clear sound without it.
I doubt it has anything to do with my media player software.
 
Harold

Harold

Active Member
I wasn't hearing any distortion in MPC-HC, so it may be at least partly to do with the decoders and some minor things involved there.
Are you doing ANY post-processing after recording those files?

(I'm ignoring the fact that saving directly to mp4 is a bad idea for now)
 
A

Ariya

New Member
No post-processing at all. No filters, nothing. Lemme just make a quick video where I show all the settings. I'll upload to YouTube. Thank you for you time and help, Harold.
 
A

Ariya

New Member
Ok, I've found what's causing the issue. It's related to push-to-talk delay. When it's at 0 ms (default) it creates the distortion. I've changed it to 50 ms and it seems to work now. It's 200 ms in OBS Classic. Values as low as 10 ms still create the distortions. Any idea what's causing this?

Here's the link to the video showing my settings and the issue (at default settings, 0 ms delay):

https://youtu.be/pM8akTwMmHk

And here's the source mp4 file:

https://drive.google.com/file/d/0B4bsnj_G9Q7iLUZEU1RKSnhOS3c/view?usp=sharing
 
S

Skajdrovski

New Member
I can't find other post about the issue so I'll bump this thread again. I'm having this issue too and only setting 50ms delay is fixing the problem. Any ideas how do fix that annyoing distortion without setting the delay that high ?
 
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