> > I wonder if microsecond sound gaps are even possible. > Microsecond gaps were possible and happened with RealAudio format when live streaming.
RealAudio as well as encoding the audio, takes 1-2 secs fragments of audio and slices it up into millisecond fragments and distributes them amongst a group of packets so that each packets have some fragments from the 1-2secs sample. During live streaming if a server couldn't keep up (e.g. due to congestion) , it would drop a packet before putting onto the TCP/IP stream. This was important as after a days transmission, if there was congestion or lots of TCP/IP retransmissions a user audio could be a many seconds behind real time. This was especially prevalent with dialup connections. So the TCP/IP ensured a perfect streams of packets but the server would have dropped a few packets before transmission. The decoder would note a missing packet in a group which would result in small gaps in 1-2 sec audio stream. To fill in the gaps, the decoder would either repeat the previous sample or fill in with silence. This was happening all the time with the BBC RealAudio streams which only stopped in March 2010. In summary, the possibility of microsecond gaps in audio could happen with RealAudio live streaming but no other protocols are using this technique. -- bpa ------------------------------------------------------------------------ bpa's Profile: http://forums.slimdevices.com/member.php?userid=1806 View this thread: http://forums.slimdevices.com/showthread.php?t=80087 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
