nico: Sounds like some good detective work. Would you mind updating the wiki to reflect this? Just so that others don't get confused.
Thanks. --- nico <[EMAIL PROTECTED]> wrote: > > Cool. I did try the 8 megabit == 1 megabyte calc > before and also got the > 6-8 seconds theoretical value you quoted. But > *empirically*, the results > seems to show that < 2s is buffered, which agrees > more with the > implication that only about 256 Kbytes are being > buffered. > > On my platform (UNIX) I can suspend and resume the > slimserver.pl > process at will to conduct tests. If playback is > proceding normally, > watching the buffer fullness display on the SB1 & > the output from > d_slimproto, I see the buffer is 99-100% ("228868" - > whatever units of > measure that is in). Then I suspend the slimserver > process. In <2s the > fullness display drops to 0% and the audio stops. > This isn't close to > the 6-8 seconds you'd expect. 2s @ 150Kbytes/sec == > approx 300Kbytes, > which is close to the number displayed (228868). > > Digging around a bit further I found this: > > http://wiki.slimdevices.com/index.cgi?SB1Hardware > > This account of the SB1 hardware claims a "2Mb > high-speed buffer". This > may be more like the truth. 2Mb = 256Kb (262,144 > bytes exactly) which > corresponds to exactly 1.49s of 44.1KHz/16-bit > stereo PCM audio. > > Thus the mystery is finally solved. The number > displayed in d_proto's > fullness output does appear to be bytes. Working > backwards from > "228,868 == 98%", the implied buffer size is around > 233,539 bytes. This > is in line with the 2Mb buffer spec. It would appear > that approx 28Kb of > buffer memory is used for other things. > > Thanks to all who contributed to this thread. > > > -- > nico > ------------------------------------------------------------------------ > nico's Profile: > http://forums.slimdevices.com/member.php?userid=672 > View this thread: > http://forums.slimdevices.com/showthread.php?t=20863 > > _______________________________________________ > Discuss mailing list > Discuss@lists.slimdevices.com > http://lists.slimdevices.com/lists/listinfo/discuss > __________________________________________________________ Find your next car at http://autos.yahoo.ca _______________________________________________ Discuss mailing list Discuss@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/discuss