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In Reply to: Audibiliy of jitter in digital audio posted by KlausR. on May 13, 2007 at 00:30:05:
This covers random jitter. What about signal correlated jitter?
Follow Ups:
As it is described in"A jitter simulator on digital data"
Kiryu et al, AES convention preprint no, 5390, 2001
Even so, if jitter isn't random the spectrum of the jitter apparently plays a role in audibility.
Good question!Do you think "random jitter" might have an affect something like dithering?
It's been known for a while that random jitter is not as audible as certain types of correlated jitter. Some jitter reducing products actually claim to work by converting correlated jitter to random jitter.
"Do you think 'random jitter' might have an affect something like dithering?"The two elements are totally unrelated....
Dither is a process where noise is applied prior to A/D conversion and/or wordlength reduction to mitigate losses in resolution. Jitter is variation of sample timing during playback.
Since the words themselves "sound" similar, I've encountered comments where one term was used but the other was meant. I wouldn't be surprised if I did this personally.
I have been known to dither and get the jitters from time-to-time myself!
Hi there> "Do you think 'random jitter' might have an affect something like
> dithering?"
>
> The two elements are totally unrelated....I used the wrong word.
Instead of "affect", I should have used "effect".
"Do you think 'random jitter' might have an (audible) effect something like dithering?"Regards
"Do you think 'random jitter' might have an (audible) effect something like dithering?"Unlikely. Dither done well is almost inaudible, aside from the low-level information in the signal being easier to discern. But jitter shouldn't have an effect on this.
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