[opus] Opus application_mode==AUDIO, 20ms framing issue?
kevinconnor at mac.com
Fri Jun 3 16:48:11 UTC 2016
Hi Opus list,
I'm noticing a discontinuity in the quality between use of 10ms and 20ms framesize for mode=AUDIO at a bitrate of about 28000. Quality drops audibly for voice signals when encoded at 20ms framesize, versus quality at 10ms. This effect is mode=AUDIO only. Using mode==VOIP shows no sig. difference between 10 and 20ms framing at this bitrate. Pesq totally overreacts, as it is wont to do :) However, I do hear a slight drop. Admittedly, 28kbps is a low bitrate to be running in mode=AUDIO. Is this effect known? Is there a difference in processing with audio mode between 10ms and (other framesizes)? I reckon it will go away if I throw some more bitrate at it, but wanted to understand it a bit better.
Thanks very much, KevinC
More information about the opus