P Floding;175768 Wrote: > That somehow a DAC will start producing noise when nothing is played if > jitter would be present when something is being played. It's like > trying to check the quality of the water supply with the tap turned > off.
Look - if EMI is causing jitter in the DAC, it's also causing noise in the analogue circuit just downstream from the DAC. After all jitter is really an analogue phenomenon - it comes from the fact that voltage tranistions aren't perfectly sharp, and one reason for that is noise. If you don't believe me, listen to the noise floor of the SB when it's a) idle b) playing a silent track The noise level is much higher in b. Why? Because the DAC is a bit noisy. That noise will also contribute something to jitter. In fact in some ways of measuring jitter (for example, actual analogue output minus ideal output, which is what Stereophile measures when it tests jitter levels) these two phenomena aren't even possible to separate - both contribute to "jitter". -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=32231 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
