P.J. Cast. wrote: > Hi Again, > > Testing with the absolute latest pjsua (even updated > to latest portaudio revision - no change). Under > Leopard with a Core Dou processor, audio sounds great. > > However, under Leopard with Core 2 Dou processor, the > audio playback has a certain static/scratchiness to > it. We have tried various codecs, GSM & PCMU/A, but This is just a shot in the dark, but static/metal effect could be caused by linear resampling being used somewhere. Since you said that "cc 0 0" works fine, this probably means that the resampling in PortAudio is okay (I think PA uses CoreUtil's resampling when it's asked to open sound device in clock rate that is not supported by the device). So this leaves us with the resampling that pjmedia uses. Check that your pjsua_media_config.quality is set to 10 (value lower than 3 will cause linear resampling to be used). And perhaps it would worth checking if file playback works okay. Try playing back a file with 8KHz or 16KHz sampling rate. If the audio is not coming out good, then we can probably confirm that the resampling is at fault. Otherwise the bug is elsewere (maybe in codec, stream, etc.). cheers, -benny > always the same noise appears. Sending audio is fine. > This happens for every call made or received on the > Core 2 Dou system (calling to another pjsua client or > other softphone). > > * The pjsua client is compiled under OSX 10.4 (Tiger) > * Portaudio demos also compiled under 10.4 > * Calls on Leopard Core Dou sound great > * Calls on Leopard Core 2 Dou have the static on local > played audio > * doing "cc 0 0" on Core 2 Dou system results in > perfect playback of local audio > * portaudio read/write demos work great on Core 2 Dou > system > > So, it looks like some sort of RTP decoding issue > under the Core 2 Dou if I had to guess. Perhaps a 64 > bit issue? We have only tested on one 10.5 Core 2 Dou > system (only Core 2 Dou we have), and it happens every > time and never under the Core Dou. > > It would be great if anyone out there under OSX has > tested with Core 2 Dou 64 Bit Leopard and can either > confirm a problem or say if it works great... possibly > could be something locally on the system, but all > other audio playback is fine as mentioned. > > Any help is appreciated.
