On 2015-06-12 07:29, Georg Chini wrote: > On 11.06.2015 22:58, hector at convivencial.org wrote: >> Hello, >> >> I would like to add a 2-5 second delay to the sound playback from a >> stream. >> >> That is, the sound comes out from an application at time X, and the >> sound can be heard from my speakers at X+5 secs. >> >> Is this possible somehow? I have been trying to play with the latency >> offset without much luck, plus it only seems to allow a maximum of >> 2000 msecs. >> >> Of course, most of the internet is trying to find how to eliminate >> latency, not how to create it, so I haven't found anything useful. >> >> Thanks in advance, >> >> Hector >> _______________________________________________ >> pulseaudio-discuss mailing list >> pulseaudio-discuss at lists.freedesktop.org >> http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss > Hello Hector, > > you can use module-loopback with the patches from > http://thread.gmane.org/gmane.comp.audio.pulseaudio.general/22956 > to introduce the delay you need. (Play back to a null-sink and use > module-loopback to connect null-sink.monitor to your real sink). For > large delays it only works properly with timer based scheduling. With > batch cards I have seen lots of error messages in the debug log at > latencies > 2- 5 seconds, although the audio still seems to be OK. > > Regards > Georg > _______________________________________________ > pulseaudio-discuss mailing list > pulseaudio-discuss at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss Hello Georg, thanks! I get the idea. After checking, it seems current loopback module does not really honor the requested latency. After applying your patches, it works! I wonder, what is stopping them from being upstream? I see they're a few months old. Another question, what is your recommendation regarding buffer_latency_msec vs latency_msec for these ranges (say 5 secs). Cheers, Hector
