tpaxadpom wrote: > Ok I have measured transporter and touch on AP2722. I've only looked at > digital out as promised. > > Here is the run down: > Transporter: > AES/EBU 377.3-424.5 ps > SPDIF RCA 566 ps > SPDIF BNC 283-330.2 ps (rca cable with 2 bnc adapters yielded the same > results) > Toslink 1.462 - 4.103 ps depending on the cable used. I've tested 4 or 5 > different toslink cables. > > Touch: > SPDIF RCA 377.3 - 324.5 ps > Toslink 1.604 ps > > I can upload the screenshots if it matters.
Archimago wrote: > Thanks! Very nice... Looks like I should see an improvement switching > over from TosLink --> AES/EBU for the digital loop! > > That's a huge variability in the TosLink cables - wow! Was this related > to length? Brand name cables? > > Do you mind if I add your data to my blog page? If I am reading the results correctly what we are taking about is jitter (it is jitter which is being measured, correct?) that is at worst just above 0.5 nanoseconds (SPDIF RCA 566 ps = 0.566 ns) and at just below 0.002 nanoseconds (Toslink 1.462ps = 0.00146 ns). Which just proves what I've been saying all along: JITTER at this level is inaudible by any living person. The audiophile approach to jitter: http://www.avguide.com/forums/jitter-audibility-robert-harley-and-keith-johnson-comment (Remember these gentlemen are really salesmen regardless of the other job titles.) The reasonable, scientific approach to jitter: http://davidkessner.wordpress.com/2011/10/27/a-pragmatic-approach-to-jitter-in-digital-audio/ (Remember this gentleman has nothing to sell.) Even with all the math and formulas the second article is easier to understand and the author talks only about jitter and not early analog tape recorders as first article does. In fact the first article is very good example of FUD. ------------------------------------------------------------------------ ralphpnj's Profile: http://forums.slimdevices.com/member.php?userid=10827 View this thread: http://forums.slimdevices.com/showthread.php?t=97950 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
