[pulseaudio-tickets] [PulseAudio] #822: Closing the last stream on an ALSA sink causes distortion

[PulseAudio]

#822: Closing the last stream on an ALSA sink causes distortion
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 Reporter:  adi     |       Owner:  lennart
     Type:  defect  |      Status:  new    
Milestone:          |   Component:  daemon 
 Keywords:          |  
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 Hi.

 I hope this is not a dup: when closing the last stream on an ALSA sink, PA
 causes some distortion (or however you like to call it).

 This is probably related to volumes, the lower the last resulting playback
 volume was (flat volumes), the louder the crackling.

 It somehow resets everything, in addition to the "closing sound", there
 was audible noise (mostly in the HF area, let's say above 4kHz). As soon
 as I loaded the sink again (that is, start a playback), the noise was
 gone.

 Though these two issues might be related to each other, I mostly report
 the distortion upon last client exit here.

 I've attached you a wav file that illustrates the problem. Be careful when
 playing back, don't crank up the volume. It's pretty soft in the
 beginning, I then terminate the last client. This is when the loud
 distortion kicks in. (you might want to open it in a wave file editor to
 inspect it, first)

 I cannot reproduce the behaviour when playing to a JACK sink, probably
 because the ALSA target device keeps streaming and remains at the same
 volume.


 Cheerio

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Ticket URL: <http://pulseaudio.org/ticket/822>
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