Bug 40125

Created attachment 50354 [details]
output from "pulseaudio -k; pulseaudio -vvvvv" during sound

Attached is the output from "pulseaudio -k; pulseaudio -vvvvv" for the time just during the sound event and the following suspend-on-idle.

James

(In reply to comment #1)
> Created an attachment (id=50354) [details]
> output from "pulseaudio -k; pulseaudio -vvvvv" during sound
> 
> Attached is the output from "pulseaudio -k; pulseaudio -vvvvv" for the time
> just during the sound event and the following suspend-on-idle.
> 
> James

Forgot to add: the output in the attachment is _without_ any /etc/asound.conf.


James

Can you verify were the problem lies by playing a short audio clip (e.g. a .wav file) through aplay (with the alsa pulse plugin) and paplay (direct pulse client), and report what works and what doesn't?

I can reproduce this locally with both aplay and paplay but only when the alsa-sink is coming out of suspend. I recall seeing this in the past as well. Not sure what might be causing this yet.

Annoyingly enough, I can't reproduce this problem here at the moment. Will try to keep an eye out for it.

Playing-around some more with klettres, I notice that these "cut-off" sounds occur only with the Russian letters and syllables, and not with the English, British, or French letters and syllables, which are the only others that I have tried.  This suggests something different about the Russian sound files, or about the way that klettres is playing the sounds.  The Russian sound files play normally with paplay. 

Maybe the Russian sounds are "broken"?  Or maybe they cause problems for pulseaudio?  Or maybe they cause problems for klettres?

The sound files are all ogg encoded, and are available at

 http://files.kde.org/edu/klettres/


James

I've also just found there is a problem playing some of the Ukrainian sounds, but the pattern is different.  Most of the sounds play normally, one of the sounds is "cut-off", and several of the sounds cannot be heard at all in klettres, though they play just fine through paplay.  Specifically, the sounds for м н and ж cannot be heard at all in klettres, and the sound for й is "cut-off", as with the Russian sounds.

I would also mention that I am playing sound through the Intel HDA and an Analog Devices AD1981 codec, now with pulseaudio Version: 1.0-4.  And, I've opened bug 284655 on the KDE Bug Tracking System, https://bugs.kde.org/show_bug.cgi?id=284655

Any suggestions how to determine if this is a KLettres bug or a KDE4 bug or an ALSA bug or a PulseAudio bug?  Or something in the PulseAudio API documentation that needs clarification?


James

Hmm - the sound for й, uk/alpha/yot.ogg, I notice that this sounds the same when played through paplay as it does played through klettres.  I am not a Ukrainian speaker, so I do not know if this is the way it _should_ sound, but it sounds "cut-off" to me.

If this sound is actually being "cut-off" by paplay, then here is an example file that would show the problem using paplay, independently of klettres.  But then, I'm not sure about the sound itself.  To me, on my sound system, the sound seems to end immediately after the start of the "t" sound in "yot", with the end of the "t" sound missing, or maybe the entire "t" sound missing.


James

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This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/pulseaudio/pulseaudio/issues/507.