[pulseaudio-discuss] Pulseaudio bluetooth sink problems

Arun Raghavan arun at arunraghavan.net
Mon Jul 25 03:57:56 UTC 2016

On Mon, 27 Jun 2016, at 12:33 PM, backup luis wrote:
> After days compiling and trying different configurations and versions
> with the bluez stack,
> I got pulseaudio running in a tiny router with OpenWrt, but not very
> well, the sound
> get some distortion, stops, echo, delay, chop and so on...
> Anyway, I know that is a very limited hardware for my needs, but I need
> to resolve one specific
> problem because if I can resolve it I will buy a better hardware for my
> project.
> When I play a song from the cell phone, if the sound level of the song is
> low, what I hear is almost
> perfect, but if the sound level rise, by the song itself or if I rise the
> volume in the cell phone
> the sound get very distorted, I check sink and output volumes in the
> pulseaudio, testing from 1% to 100%
> and nothing changes, only the level of the audio card output, but the
> distortion persist. Testing the same
> sound/songs in mp3 and wav formats.
> And when I try to play with an old Nokia phone, I only ear noise, like
> white noise regardless of the volume, this
> noise is constant, not like a distorted sound.
> Pulseaudio: 6.00, 6.22.9 and 8.99.2 compiled for dbus
> Bluez: 5.30
> Cell Phone: Android
> Old Cell Phone: Nokia
> paplay with some wav files sounds good.
> the sound board and the router is running well with another programs like
> madplay, alsamixer, mpd.

That is quite odd. Do you see anything in PulseAudio logs when the
distortion occurs?

-- Arun

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