Hey folks.
I've been experiencing some weird  and infrequent crackling of audio with pulse 
4, and applications that use the simple pulse API. The crackling tends to 
happen at the very start of the buffer, causing a varying amount of audio to be 
audible as noise, or not at all. This doesn't occur when other applications are 
playing audio at the same time, and it comes and goes, and I can never predict 
when it might start to happen, or when it will go away. Unfortunately I haven't 
been able to reliably log this, since it seems to occur very infrequently if 
not at all whilst being logged with full verbose output.

I haven't really been able to reproduce this problem outside of this single use 
case, since all the apps I've tried to test to reproduce the problem don't use 
the simple pulse API. My use case is the GNOME Orca screen reader, using the 
speech-dispatcher text to speech server, using its pulseaudio backend, with the 
espeak speech synthesizer. The sample rate of the audio from speech-dispatcher 
is 22050, and the pulseaudio backend in speech-dispatcher is using the simple 
pulse API.

The above combination worked just fine in pulseaudio 3 and earlier.

I'm sorry if this sounds vague, and I will keep trying to get a log during the 
bad audio crackle, but thats the best I have WRT this problem right now. Happy 
to test other config changes etc to help further narrow down the cause.

Luke
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