Dominic Sacré wrote: > I'm trying to use an Echo AudioFire 4 with the snd-fireworks driver. > With FFADO the device works reasonably well at a period size of > 64 samples (on a PREEMPT_RT kernel), whereas with snd-fireworks the > lowest possible period size seems to be 256 samples. > > The lowest achievable analog roundtrip latency seems to be around 19ms > (at 2x256 frames), as opposed to 8.3ms with FFADO (at 2x64). Are there > any known limitations of the snd-fireworks driver in this regard? At the moment, the driver uses a minimum period size of 5 ms. You could try reducing INTERRUPT_INTERVAL and the parameter to snd_pcm_hw_constraint_minmax() in sound/firewire/amdtp-stream.c, and recompiling the driver. Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
