Digital Drive: I think I understand by C Colby

Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

For Sale Ads

FAQ / News / Events

I think I understand

65.191.56.109

C Colby

In Reply to: The problem is isolation posted by Dave I on December 26, 2002 at 23:33:05:

Interesting. Thanks. So you're saying that the problem with my "solution" is that the input circuit (that fills the buffer) will necessarily have second-order effects, such as an irregular draw on the power supply, that will directly affect in some small way how the output circuit (that consumes the buffer) operates?
So even if the first-order effects of jitter can be eliminated by a buffer-based clock-averaging approach, the second-order effects are direct, through the power supply or whatever, and thus cannot be averaged over time.
I think I got it now. Very interesting. Thanks for your patience.
P.S.: What do you mean when you said "mine is around 1Hz"? Is that a DAC that you designed, or one that you bought?

This post is made possible by the generous support of people like you and our sponsors:

VH Audio

Topic - why is jitter so difficult to deal with? - CCollby 15:25:33 12/22/02 ( 6)

Re: why is jitter so difficult to deal with? - jpsulliv 12:34:53 12/26/02 ( 5)
- Re: why is jitter so difficult to deal with? - C Colby 15:58:35 12/26/02 ( 4)
  - Jitter is not a data error - Dave I 17:55:12 12/26/02 ( 3)
    - still wondering... - C Colby 22:09:29 12/26/02 ( 2)
      - The problem is isolation - Dave I 23:33:05 12/26/02 ( 1)
        
        I think I understand - C Colby 12/27/02 06:39:37 12/27/02 ( 0)