[pulseaudio-discuss] Network audio stuttering?

Russell Treleaven rtreleaven at bunnykick.ca
Wed Dec 26 19:53:48 UTC 2018

Try playing music locally on the headless box and see if that stutters.
If that works try playing music over the loop back network.

On Wed, Dec 26, 2018, 12:31 PM David Davidović <david at davidovic.io wrote:

> Hi,
> I'm running a system-wide PulseAudio instance on a headless box connected
> to my speaker system. The sink is broadcast via Zeroconf and I use it to
> play music and movies via WiFi from my laptop. The headless box is
> connected to the WiFi router via a wired connection.
> Unfortunately, every couple of minutes or so, the sound stutters for a
> short time, then returns to normal.
> Does anyone have any suggestions as to how to debug the source of these
> issues? My best bet is WiFi latency. I tried increasing the buffer size
> (via default-fragments and default-fragment-size-msec) on both the client
> and server machine but I haven't seen any considerable improvement. The
> actual network packets seem to always be around 1.5K in size, which would
> be around 4ms of uncompressed sound with 32-bit stereo samples at 44.1kHz,
> and that's without any overhead. If my calculation is true, this would
> explain the stuttering, as the network latency towards the machine is at a
> baseline of ~2ms but can spike sometimes due to nature of WiFi.
> I'd be happy if there was a way to e.g. tell the native-protocol-tcp
> module to buffer more of the audio and play it, as I don't mind the
> increased latency; I just want to get rid of the stuttering and all
> applications I use manage PulseAudio latency compensation quite well.
> Has anyone else had this issue and resolved it?
> Many thanks for your help.
> Best,
> --
>   David Davidović
>   david at davidovic.io
> _______________________________________________
> pulseaudio-discuss mailing list
> pulseaudio-discuss at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
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