Hi Benny, Thank you for your help. I would definitely like to port the video modifications to a newer release, if time allows. However, I could resolve the problem on my own. Here are the points that I consider as important: 1. Using laptops, the CPU should not be set to the power save (or power on demand) mode. Automatic CPU frequency adaptation causes artifacts ( "cpufreq-set -g Performance" is the solution). 2. I've replaced the port audio lib with the stable snapshot from the portaudio website. It reduced the application start-up time. Additionally, I've replaced pasound.c (and adapted other files respectively) to avoid the sampling mismatch for OSS. 3. However, using OSS sound driver (dsp devices under linux) causes some minor artifacts on my hardware, so ALSA must be used. Thanks, Blazej ________________________________ From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Benny Prijono Sent: Freitag, 13. Februar 2009 18:33 To: pjsip list Subject: Re: Pjproject 0.8.0 sound issue (old version because ofvideo extension) On Thu, Feb 12, 2009 at 1:19 PM, <Blazej.Lewcio at telekom.de> wrote: 1) The sound quality using the speex codec is affected periodically. It sounds like a resampling problem (periodical stuttering). 2) Using PCM I can hear single clicks at random times. 3) The application starts quite long on my computer. (Seems to be related to PortAudio) 4) Using version 0.9.0 the problem disappears, on the same machine. I would prefer to resolve this problem in 0.8.0 (use a patch) than upgrading to a newer version. Hi Blazej, incidently the 0.9 release is _the_ release that empasized on improving audio quality! So there were quite a lot of modifications there and it's hard to pinpoint a single (or few) places where it may fix your problem. And if any, chances are the fixes are intertwined with one another so it will be hard to pick just a few anyway. Have a look at the 0.9 release notes: http://trac.pjsip.org/repos/milestone/release-0.9.0 So unless you can pinpoint exactly what the problem is, by using our audio troubleshooting wiki here: http://trac.pjsip.org/repos/wiki/sound-problems, then my only suggestion is to upgrade to the latest 1.0.x. Same suggestion for everyone else who are using pre 1.0 version. cheers Benny -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090216/1ef95276/attachment-0001.html>
