Hi, So it seems the sound device in Davinci is actually always opened in stereo mode, even when --stereo is not specified (not sure whether the problem starts in sound driver or PA though). Regards, nanang 2008/10/11 Fan-Cheng Wu ?????\ <fcwu.cs95g at nctu.edu.tw>: > Thank you, nanaing. The problem can be solved by adding --stereo param. > > For the people who want to use pjsip on Davinci, you should add > following param in your config file for better audio quality. > --stereo > --ec-tail=0 > --add-codec pcmu > --dis-codec speex > --dis-codec ilbc > --dis-codec GSM > --dis-codec G722 > --clock-rate=8000 > --snd-clock-rate=8000 > > Here is the remaining results of the tests you mentioned. > - In Davinci, 'short' is 16 bits > - sndtest output the duration is 11s > - playing a 8kHz file on Davinci is centain faster than x86 > > Best Regards, > Fan-Cheng Wu > > > > 2008/10/10 Nanang Izzuddin <nanang at pjsip.org>: >> Hi, >> >> Just an opinion, those tests show that PJSUA on Davinci records more >> samples than it is supposed to, and also plays more samples than it is >> supposed to (test #1 - #4 involved only Davinci where record & play >> are sync'd, thus they are fine, while test #5 & #6 involved other >> machine). Or it is just an impression caused by inaccurate pjlib data >> types definitions for Davinci (e.g: 'pj_int16_t' is defined as >> 'short', while 'short' in Davinci may be 32 bit length instead of 16 >> bit). >> >> So, I think more tests are needed before conclude something here, e.g: >> - sndtest (in pjsip-apps/src/samples directory), check if the duration >> printed by sndtest is about twice longer (e.g by default sndtest >> duration is 10s, the output duration should be around 10s too). >> - play a correct 8KHz wav file on Davinci's PJSUA, check if it is played faster. >> - run pjsua in stereo mode 8KHz, do a recording, it will result a >> stereo 8KHz file, play that recorded file as mono 8KHz. >> >> Regards, >> nanang >> >> >> 2008/10/10 Fan-Cheng Wu ?????\ <fcwu.cs95g at nctu.edu.tw>: >>> Hi, >>> >>> I upload two wav files to explain my problem. >>> The file recorded by this >>> way(http://trac.pjsip.org/repos/wiki/audio-how-to-record) could be >>> found here http://moon.cse.yzu.edu.tw/~s912356/output_people_8000.wav. >>> It sound slow and low pitch. The correct one should sound like this >>> http://moon.cse.yzu.edu.tw/~s912356/output_people_16000.wav. >>> >>> I made following testings to clarify my problem. >>> 1. "cat /dev/dsp > file", and then "cat file > /dev/dsp" => Correct >>> 2. Record and Play audio by portaudio(testing src is >>> third_party/portaudio/test/patest_record.c) => Correct >>> 3. PJSUA Looping-back >>> testing(http://trac.pjsip.org/repos/wiki/audio-check-loopback) => >>> Correct >>> 4. Record any audio either from file or mic by PJSUA, and Play them on >>> Davinci by PJSUA and sample/playfile => Correct >>> 5. Record any audio either from file or mic by PJSUA, and Play them on >>> my PC by mplayer => Slow and low pitch. It would be correct if playing >>> it with double rate, saying 16000Hz. >>> 6. VoIP between PJSUA on Davinci and PJSUA on Linux. => Slow and low pitch. >>> >>> So I infer the problem is triggered by pjsip. How can I dig out them in pjsip? >>> >>> >>> >>> FCWu >>> >>> >>> >>> 2008/10/10 Nanang Izzuddin <nanang at pjsip.org>: >>>> 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 >>>>> >>>> >>>> _______________________________________________ >>>> 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 >>>> >>>> >>> >>> _______________________________________________ >>> 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 >>> >>> >> >> _______________________________________________ >> 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 >> >> > > _______________________________________________ > 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 > >
