[pulseaudio-discuss] Networked pulseaudio problems

[ad at pk.dy.fi]

I was using RTP, but I tried without RTP too. There is no significant 
difference. I haven't tried it with wired connection, but with faster wlan 
(802.11n) it works ok.

On Tue, 18 Feb 2014, Laurențiu Nicola wrote:

> Hello,
>
> Are you using RTP or the native protocol? I'm having this kind of
> difficulties with RTP, but in my case it's caused by the WiFi latency
> jitter. While the throughput is clearly enough for audio, my network has
> latency spikes high enough to -- I assume -- confuse the clock skew
> estimation in module-rtp-recv. [1] seems to be talking about the same
> issue, and I think the patch from that repository reverts the code to a
> much older version.
>
> The effect is sometimes the audio cutting off about once a second --
> even minutes after the spike has passed -- and sometimes stopping
> completely. When it stops, I have to restart PA.
>
> Can you try this over a wired connection?
>
> Regards,
> Laurentiu
>
> [1] https://fruit.je/mpd-rtp , see the "Setting up the clients" section.
>
> On Tue, Feb 18, 2014, at 16:20, ad at pk.dy.fi wrote:
>> I've setup Pulseaudio so that I can direct the sound from my laptop to my
>> media player (Raspberry PI), but there is a problem. For some reason the
>> pulseaudio on PI starts to "cut" the sound every few minutes. By that I
>> mean that the playback pauses for a short while several times and then
>> continues. These "cuts" last a few seconds in total. I checked the
>> CPU-usage of Pulseaudio on PI to see if that was the problem (PI is not
>> terribly powerful), but Pulseaudio only seems to use around 20% CPU and
>> there isn't much else happening on the PI, so that's not likely to be the
>> problem.
>>
>> I also tried changing pulseaudio resampling method to see if that would
>> help. It does the same even with "trivial" resampler (though the overall
>> sound quality drops significantly). It seems to be a problem with wlan,
>> but how come 54 Mbps (802.11g) isn't enough for pulseaudio?! The pi is
>> using a wired connection. 150 MBps 802.11n would seem to work, but to me
>> that sounds like excess use of bandwidth.
>>
>> Any idea how could I fix them? Is there a way to increase some buffer or
>> something?
>>
>>
>> _______________________________________________
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>> pulseaudio-discuss at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
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