https://bugs.freedesktop.org/show_bug.cgi?id=87814
--- Comment #4 from Radics Péter <[email protected]> --- I have a similar issue but I can also reproduce the extreme loud sound with a simple playback (with aplay). The playback gets extreme loud if the per-application sound volume is not exactly 100% (or 0, which mutes it). The error seem to happen only to mono sound (that's why I think it's the same issue: the mic input is also mono). I first noticed it with non-kde notifications on a kde desktop (the notification was coming from thunderbird) Then it happened with pidgin voice call. Then I traced the issue to mono playback. The sample I used was: test.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 16000 Hz. I also tested this on a non-kde (simple openbox) desktop, with pavucontrol. (under kde I tested this using both pavucontrol and kmix to change the per-stream volume). I've tried different settings for resamnple-method (in daemon.conf) (speex-float-1, trivial, ffmpeg), they all produced the same behavior. On another laptop we could reproduce the extreme loud sound by changing the sound level of a paused music player (audacious) while playing the mono sample with aplay (that is: the mono sample's sound settings were not touched, that was the only actively playing sound and it got extremely loud just by changing the sound volume of another application). On this particular laptop the threshold for the "loudness" seems to be around 40% instead of 100% (setting the volume below 40% results in extreme loudness). I first noticed the issue with pulseaudio-5.0, too. -- You are receiving this mail because: You are the QA Contact for the bug. You are the assignee for the bug.
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