search for: overcompressed

...ree providers, we see a curious thing: The audio quality in the direction from our softphones to the outside world still sounds as good as POTS, but the audio quality in the inbound direction (outside world -> VoIP Provider -> asterisk -> softphone) is noticeably worse. It sounds "overcompressed" or "slightly robotic" somehow, with a decrease in dynamic range. It's not lagged or echoey; it just sounds like it's maybe using a crappier codec than ulaw, in that direction only. I'm baffled by this. Both legs of the calls show as "Format: 0x4 (ulaw)&quo...

At speex.org, I read that Speex is well-suited to internet audio streaming and audio books. However, I am having difficulty finding or creating audio-book-type material of acceptable audio quality vs file size. For the sake of comparison, look at the speex sample in Ubuntu's example-content_26_all.deb vs http://podcast.msnbc.com/audio/podcast/pd_mtp.mp3 The mp3 sounds ok, streams and seeks