Hi Clemens, I have a question though, using the alsaloop tool and setting a latency, what does that mean exactly ? If I set latency to 48 frames (like below), does it mean 48 frames per capture/playback, i.e. so total latency is 96 frames ? Or is 48 the total latency ?
Regards /R > -----Original Message----- > From: Robert Bielik [mailto:robert.bie...@dirac.com] > Sent: den 21 juli 2017 11:46 > To: Clemens Ladisch <clem...@ladisch.de>; alsa-user@lists.sourceforge.net > Subject: Re: [Alsa-user] Route input to output with minimal latency > > Dear Clemens, > > Thank you so much for the alsaloop tip, I just ran it with: > > > chrt -rr 70 alsaloop -f S32_LE -C plughw:0 -P plug:ladspa -l 48 > > And it works perfectly, exactly what I needed! 😃 > > Regards > /Robert > > > -----Original Message----- > > From: Robert Bielik [mailto:robert.bie...@dirac.com] > > Sent: den 21 juli 2017 11:32 > > To: Clemens Ladisch <clem...@ladisch.de>; > > alsa-user@lists.sourceforge.net > > Subject: Re: [Alsa-user] Route input to output with minimal latency > > > > Hello Clemens, > > > > > Otherwise, you have to do the capture and playback in software. See > > > the alsaloop tool. What latency you can reach depends on how much > > > other applications and drivers interfere with the scheduling; on the > > > Pi, typical culprits are WiFi, ethernet, or USB. > > > Also see <https://wiki.linuxaudio.org/wiki/raspberrypi>. > > > > Thanks, I'll look at alsaloop tool. For further info, I am using an > > I2S sound card > > (http://www.audioinjector.net/rpi-hat) , and have setup an ALSA device > > to route playback.pcm through a LADSPA plugin, so all DSP will reside > > in the plugin, thus I only need to route ALSA input to output in the > > application 😊 > > > > Regards > > /Robert > > ---------------------------------------------------------------------- > > -------- Check out the vibrant tech community on one of the world's > > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Alsa-user mailing list > > Alsa-user@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/alsa-user > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most engaging > tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Alsa-user mailing list > Alsa-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/alsa-user ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
