two possibilities: 1) actual corruption of the bitstream, 2) jitter --
i.e. 1) are the bits being changed en-route? 2) are the right bits
getting to the DAC, but not at the right time?

to test for bitstream corruption, take a DTS encoded audio disc (e.g.,
the moodys blues "days of future past") and rip one track to a WAV
file, just like you'd rip a normal CD track to a WAV file.  play that
thru the squeezebox, and run the S/PDIF output from the squeezebox to
an A/V receiver that recognizes a DTS bitstream.  WARNING - TURN THE
VOLUME CONTROL WAY DOWN FIRST!!!  if you get a correctly decode DTS
bitstream, you'll hear music, and can conclude that the bitstream is
intact.  if you get white noise at a loud level (which is why you must
turn the volumn down first), somewhere along the way the bits are being
changed.  in my experience, any change to them will be audible as
degradation, usually a a muddying quality, felt most as adding edginess
to the treble.

but if the bits are intact, it would be down to jitter.  a jitter
reducer (like the monarch DIP classic) can be beneficial to clean
things up, because it re-clocks the bitstream prior to sending it to
the DAC.  also, different digital interconnect cables can effect
jitter.  and the RCA S/PDIF output will likely have lower jitter than
the toslink output.

hope that helps...


-- 
apeman
------------------------------------------------------------------------
apeman's Profile: http://forums.slimdevices.com/member.php?userid=13533
View this thread: http://forums.slimdevices.com/showthread.php?t=39113

_______________________________________________
audiophiles mailing list
audiophiles@lists.slimdevices.com
http://lists.slimdevices.com/lists/listinfo/audiophiles

Reply via email to