Hi, Not sure what's going on, but I agree it seems to be a sound device issue, e.g: it may be actually opened in either stereo or 16KHz. I found this old post that may be related to this issue: http://mlblog.osdir.com/linux.davinci/2006-10/msg00283.shtml, as it says "Davinci OSS driver don't work correctly in mono mode and driver still return two samples per tick". Perhaps you can check this by running pjsua in stereo mode (with param '--stereo') and see the mic recording result. Then you can also check pjsua with clock rate 16KHz. In case it *is* sound device issue, you can also search/post a question in the PortAudio forum (PJSIP uses PortAudio on linux platform). Moreover, you can implement your own sound device wrapper, please see http://trac.pjsip.org/repos/wiki/External_Sound_Device for the build config. Regards, nanang On Thu, Oct 9, 2008 at 1:25 PM, Fan-Cheng Wu ?????\ <fcwu.cs95g at nctu.edu.tw> wrote: > Hi All, > > I experienced pjsua on TI Davinci, which configured ./aconfigure > --host=armv5tl-montavista-linuxeabi CFLAGS='-O2 -msoft-float -DNDEBUG > -mcpu=arm926ej-s' --disable-floating-point and defined "#define > PJSUA_DEFAULT_CLOCK_RATE (8000)" on config_site.h. > When I run pjsua to record sound of 10 second from mic to a file, the > file would be extended to 20 second long and sound lower pitch than > original one. (Play it with double rate, it sound fine.) I suppose > it's because recording device has wrong recording rate. Anybody knows > how can I adjust it? > > p.s. If I recorded a default ring sound from port 02 (Port #02[ > 8KHz/20ms/1] ring transmitting to: ), it's also correct. So the > problem come from recording device (?). > > The following are the steps I recorded sound from mic. > ./pjsua-armv5tl-montavista-linux-gnueabi --rec-file=output.wav > --clock-rate=8000 --snd-clock-rate=8000 > ... >>>> cc 0 1 > 07:49:01.566 pjsua_media.c pjsua_set_snd_dev(): attempting to open > devices @8000 Hz > 07:49:01.758 ec0x150df8 AEC created, clock_rate=8000, channel=1, > samples per frame=160, tail length=200 ms, latency=96 ms > 07:49:01.759 conference.c Port 3 (ring) transmitting to port 1 (output.wav) > > > > Best Regards, > FCWu > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >
