On Wed, Jan 13, 2010 at 1:09 AM, Jerry Monteiro <jerrym at matrixconsultants.com.au> wrote: > > Hi Johan > > We have done some tests using the below settings; > >>media_cfg.clock_rate = 8000; >> media_cfg.ptime = 20; >> media_cfg.audio_frame_ptime = 20; // GSM codec >> media_cfg.ec_tail_len = 100; // 0 >> media_cfg.snd_rec_latency = 100; >> media_cfg.snd_play_latency = 100; > > 1. sip to sip call - the sound was okay > 2. sip client to mobile - the sound was bad at remote end, my end using > touch pro the sound was 'tinnie' > 3. sip client to landline - the sound was okay and usable, but my end still > sounded 'tinnie' > > Would you be able to suggest any settings to try? > Also Benny/Johan, what would you suggest to use as a value for > PJMEDIA_SOUND_BUFFER_COUNT ? > In the mailing list, there are some people using 6, 16 or should I leave > default as 32? > On recent PJSIP version, the PJMEDIA_SOUND_BUFFER_COUNT would be calculated based on your PJMEDIA_SND_DEFAULT_PLAY_LATENCY, so you shouldn't need to set its value anymore. Re: tinnie sound, if my understanding of "tinnie sound" is the same as yours, this normally is caused by linear resampling, so make sure there's no resampling anywhere in the end to end media path. You can also try disabling the EC for now, see if it affects anything. Other than these, I'm afraid I don't have any specific suggestions, other than keep experimenting. :) Cheers Benny
