Thanks for the quick reply. > Application can choose between two methods: > > 1) enable xrun (set stop_threshold to buffer_size or less) - you are > using this method now > 2) disable xrun (set stop_threshold to boundary) > > If you disable xrun checking in the driver and if application does not > update the ring buffer contents in time, the old samples from the ring > buffer will be replayed (clicks). Additionaly to reduce clicks, you may > force the driver to fill the ring buffer with silence - see > silence_threshold). Disabling xrun will have to do for now - dirty audio is better than no audio! I had a look at silence_threshold, but the wording in the API is slightly confusing to me, I'm not sure how that and silence_size work. I read to/write from buffers of 256 frames. I set alsa's buffer size to 256, and its period size to half of that. So I figure if I want absolutely no data re-transmitted because I've not filled up the ring buffer in time, I should set silence_threshold to 0 and silence_size to the buffer size? Or should silence_threshold be the size of a period and silence_size be (buffer size - period size)? John G ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user