Hello All Thanks for the prompt replies. I am using pjsip 0.9.0 version on openmoko FR compiled in arm-angstrom-linux environment by using following command --host=arm-angstrom-linux-gnueabi I am having problem with sound quality * audio stutters, * audio break-ups. I looked through the checklist https://trac.pjsip.org/repos/wiki/sound-problems, and I ran the sound test by ./sndtest (https://trac.pjsip.org/repos/wiki/audio-check-sound-device-jitter) and got the below given results . ---------------------------------------------------------------------------------------------------- 17:49:15.121 os_core_unix.c pjlib 0.9.0-release for POSIX initialized 17:49:19.212 pasound.c PortAudio sound library initialized, status=0 17:49:19.215 pasound.c PortAudio host api count=1 17:49:19.217 pasound.c Sound device count=1 17:49:19.222 pjlib select() I/O Queue created (0x47754) 17:49:19.226 sndtest.c Found 1 devices: 17:49:19.228 sndtest.c 0: /dev/dsp (capture=16, playback=16) 17:49:19.915 sndtest.c Testing playback device /dev/dsp 17:49:19.917 sndtest.c Testing capture device /dev/dsp 17:49:20.481 sndtest.c Please wait while test is in progress (~11 secs).. 17:49:32.424 sndtest.c Dumping results: 17:49:32.425 sndtest.c Parameters: clock rate=8000Hz, 80 samples/frame 17:49:32.425 sndtest.c Playback stream report: 17:49:32.425 sndtest.c Duration: 9s.980 17:49:32.426 sndtest.c Frame interval: min=0.004ms, max=132.173ms 17:49:32.426 sndtest.c Jitter: min=9.955ms, avg=28.194ms, max=132.168ms 17:49:32.427 sndtest.c Capture stream report: 17:49:32.427 sndtest.c Duration: 9s.980 17:49:32.427 sndtest.c Frame interval: min=0.003ms, max=132.144ms 17:49:32.428 sndtest.c Jitter: min=9.943ms, avg=28.187ms, max=132.141ms 17:49:32.428 sndtest.c Checking for clock drifts: 17:49:32.428 sndtest.c No clock drifts is detected 17:49:32.429 sndtest.c Test completed with some warnings -------------------------------------------------------------------------------------------------------------- As the avg jitter is below 32 ms so that is fine but the max jitter is very high (132.168ms) so as suggested on that page I would like to ask what can be the problem. Do I need to change the jitter buffer settings according to device (openmoko FR).? Further I tried using PCMU and Speex codecs but do not see any change in CPU load. Any kind of suggestion will be greatly appeciated. Thanks Tarun ----- Original Message ---- From: Benny Prijono <bennylp@xxxxxxxxx> To: pjsip list <pjsip at lists.pjsip.org> Sent: Monday, August 18, 2008 8:29:01 PM Subject: Re: how to reduce CPU load and improve voice quality on mobile device FR On Mon, Aug 18, 2008 at 6:51 AM, TARUN CHAPLOT <tarunchaplot at yahoo.com> wrote: Hi, We are having a problem with running PJSIP on the neo freerunner, and have tried a variety of solutions to fix this but still not successful. The setup that we are using is PJSIP on a Mac with OSX, and PJSIP compiled for openmoko.I compiled PJSIP for openmoko by setting the env using command source /usr/local/openmoko/arm/setup-env and ./configure --host=arm-angstrom-linux-gnueabi. First thing first, what pjsip version? When we run PJSIP between the Mac and Openmoko, we are encountering problems. The problem is that the sound quality is very bad. When we speak into the Mac, the sound coming from the Openmoko comes out in stutters (on and off every half second). It is also full of static. When we try a VOIP call directly from mac to mac, it works and sounds fine. If you haven't seen this, perhaps you can follow the checklists in https://trac.pjsip.org/repos/wiki/sound-problems, and find out what the exact problem is. I looked at the CPU load and found that it is almost 80% on freerunner and 25 % on Mac OS X. I have tried with different codecs e.g. speex ,PCMA and GSM. Please advise me that how can I reduce the CPU load. I have followed the following http://trac.pjsip.org/repos/wiki/FAQ#cpu but no improvement. Now that's surprising. You *should* see significant difference in CPU usage between Speex and PCMU. If not, then that probably suggests that the problem is elsewhere. Cheers Benny Thanks in advance. Tarun -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080818/cedd93e1/attachment.html
