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In Reply to: RE: These threads are awesome... posted by Tromatic on July 30, 2012 at 16:56:28
Nobody really knows unequivocally what is exactly going on in regard to jitter..... Maybe the biggest question mark of all being the jitter characteristic of the original A/D transcription.... It is NOT zero, yet with this never-ending quest to completely eliminate jitter, it's as if we presume the original jitter signature is zero......
My opinion of jitter performance differs from the norm.... I believe the best sonic performance is attained by preserving the original A/D jitter signature, not by eliminating jitter.
Follow Ups:
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Given there is jitter on the clock in the A to D conversion; if you want to preserve that, and I don't see any possible reason why you would if you could get rid of it, then you would want to have zero jitter on the D to A end of it.
I've never heard anybody say there was no jitter at the A/D end, but why in the world would you want to add more jitter on the D/A end, which is exactly what you are saying you do.
Turning off jitter suppression = adding more jitter than you have to.
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You mentioned this before, which implies that that information is contained in the recording somehow? Or how is it done? Re-clocking? I doubt that. Or just a good idea that cannot be done?
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When playing CDs, I use players or DACs that do NOT re-clock the digital signal. And when I rip or burn CDs, I leave the jitter suppression option turned off. Provided the DAC is good to begin with, I generally get the most satisfaction in the playback with as little internal alteration of the signal (aside from the digital filtering) as possible.
If the CD manufacturers would record another clock track or tracks on the CD itself, then it could be done. The jitter from the original recording clock could be removed for the most part.
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"you're making a joke right?"
Perhaps not. In some cases jitter can be undone. Wow and flutter are nothing but the analog form of jitter and there are techniques that can be used to remove these because analog tape recordings do have a "clock track" in the form of residual bias noise.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
Hi Tony,
I have heard the results of this system on some Greatful Dead CDs. It has a live feel like nothing I have heard before. I wish they would put out some jazz and classicial with this system.
Dave
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yea, I can see if you had a perfect replica of the original clock you could compensate for it, but tell me how you could add that data to a CD.
AND... if it is possible to correct for A to D jitter why not do it on the other end? Why not correct the data going on the disc instead of when you take it off?
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