On Fri, May 15, 2009 at 9:09 AM, Michael <michael_zurich at yahoo.com> wrote: > Hi Benny > > I compiled pj with portaudio PA-DS instead of factory PA-WMME and reduced > latency to 40ms. Latency is the reason for PA-DS. This works fine for some > hours. > > Hi Michael, actually another user also reported similar problem, with our (old) dsound.c DS sound abstraction. So two different DS implementations exhibit the same problem, there's a good possibility that this is DS problem. Please try with PA-WMME, 40ms doesn't sound much IMO, especially with this stability cost. In the mean time, we're working on optimizing the latency with the native WMME backend in the next one or two releases. Or if you can afford it, you can probably try with the so called Kernel Streaming (WDMKS) backend in PortAudio. This should give the best latency on windows since it bypasses the kernel mixer, but at the cost of exclusive use of the device (only one app can use the sound device at a time). Who knows maybe it'll be more stable as well. You will need to add PA-WDMKS source file in our PA Visual Studio project though. cheers Benny > Kind Regards > Michael > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090515/193ab98f/attachment-0001.html>
