Hi, Please update your source from SVN trunk, in case you haven't. There was a bug in VAS wrapper regarding bitrate setting, so AMR always worked on 4750bps bitrate regardless the setting. This has been fixed in changeset 3078 (of ticket #1028). Also, there has been a work on jitter buffer for low bandwidth network, please see ticket #969. We'll be glad to hear any feedbacks. BR, nanang 2010/1/29 cq_wei <cq_wei at 126.com>: > Hi all, > > Anybody know if there is more params to adjust? I am building an user agent > on symbian platform using VAS/AMR codec, it works but the voice quality is > poor. In order to fine tuning I have change the following things > > 1) Default codec , I have changed the definition for AMR's codec_desc > in passthrough codec.c. the default mode and frame per packet have been > adjusted (I just change them same as nokia's own PoC client). > > 2) Media_cfg. Using default configuration. default param is most > suitable for VAS/AMR passthrough codec, right? > > Still the quality is uncomparable with Nokia's own client (NOKIA PTT > client). The delay is longer (Nokia's is 1 second around while mine is 2 > seconds around) and jitter is obvious. The network is GRPS/EDGE. > > Is there any more params I can adjust to improve voice quality? > > > ________________________________ > ??????????????????? > _______________________________________________ > 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 > >
