On Wed, May 13, 2009 at 7:38 PM, George Evi <george.evi at ctcinc.ca> wrote: > We are not happy overall (when using GSM), actually the worst is for > remote side which experiences loss of syllabisis, some time stuttering and > echo is present. > > > > We have good results with default codec PCMU but we wanted to have a more > performant codec with lower bit rate. After all tests made I start to think > that at least on Nokia E71 because of resource limitation (mostly CPU) we > can not use GSM or iLBC external codecs. I test iLBC and did a profiling > which shows a 60% CPU load which cause application blocking (not dead, no > crash) but don?t respond to Hung-up but could use application Exit button. > > > Normally CPU should be sufficient for GSM, but having said that, you're using Release/optimized build right? Another test that you could do is to run pjsua (on desktop) with GSM, over the same wireless connection to the same provider, just in case the problem is not with the handset. > I thing we should try as you suggested ?Audio Proxy Server? which use > internal codecs and should give better results. > > > Yep that should give much better results, solving the echo problem as well. cheers Benny > Thank you, > > George. > > > ------------------------------ > > *From:* pjsip-bounces at lists.pjsip.org [mailto: > pjsip-bounces at lists.pjsip.org] *On Behalf Of *Benny Prijono > *Sent:* Tuesday, May 12, 2009 6:26 PM > *To:* pjsip list > *Subject:* Re: [pjsip] audio problem with GSM on Symbian > > > > On Tue, May 12, 2009 at 7:29 PM, George Evi <george.evi at ctcinc.ca> wrote: > > The problem is the voice when we using the GSM-FR (full rate) codec on > Nokia 71 connected on wireless network (case Rogers Canada). > > The ?wav? file is a registration of my voice when I leave a message on my > voicemail at home on a PSTN phone. > > We try to improve the voice quality J. > > > What I meant to ask was, are you not happy with the overall quality of the > recording, or some parts of it (in which case, which one, e.g. from what > time/duration), or both. I noticed that initially the recording is quite > audible, but some parts of it later are just garbled/blips. > > cheers > Benny > > _______________________________________________ > 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 > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090513/b8037266/attachment-0001.html>
