Clicking distortion at the begining and the end of radio communications

[vanfanel]

Hello there,

I've noticed that there's audible clicking distortion when the radio communication samples begin and end. During the sample playback itself it's fine, the clicking distortion can be heard only when it's starting or ending. No other audio sample or music in-game seems to exhibit this problem.

-This happens on the latest GIT code of the engine. No idea when it started happening.
-This is on GNU/Linux using SDL2 on ALSA audio and OpenGL video. ALSA meaning real ALSA, no PulseAudio/Pipewire is even running on the system.
-This is not a performance problem either: CPU usage is under 10% and GPU usage is also very low on every part of the game (Ryzen 7 8700G, latest stable MESA 25.0.0).

It seems to me that the problem comes from the "communications open" and "communications close" samples, not from the dialog samples themselves.

[vanfanel]

I have found that lowering "Master Volume" to ~80% and "Voice Volume" to ~90%, the clicks are gone.
I suspect audio mixing is resulting in some variable overflow, causing those clicks if those audio levels are at 100%.