On 06.05.2015 04:17, golden wrote:
Dear PulseAudio folks,
We are using PulseAudio in our automotive project, the progress is pretty good so far.
I need some help for solving the sync problems between two speakers.
The pic below is the data flow of the two speakers:
without any syncing method, what we hear from the front-speaker is
ahead of the rear-speaker (real-spear is slower for sure), our goal is
that make the rear-speaker almost sync with (or catch up) the front
speaker.
Hi,
with your manipulation of the audio and with module-loopback you
introduce quite a lot of latency into the
first path. Maybe you can simply set the latency of alsa-sink.1 larger
than that of alsa-sink.0, not sure if this works.
Otherwise I would suggest to make the paths look more or less
equivalent, that would mean putting a
module-loopback into the front speaker path.
You could also try and use my (not yet reviewed) patches for
module-loopback at
http://thread.gmane.org/gmane.comp.audio.pulseaudio.general/22956
which allow a better control over the latency introduced by the module.
If you use the patches and have a module-loopback in both paths you
should be able to fully synchronize
them by adjusting the latencies of the two modules.
Regards
Georg
_______________________________________________
pulseaudio-discuss mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
