In Reply to: Re: Goodness, Gracious! posted by macaque on November 15, 2005 at 12:10:44:
Your question about noise suggests that y'all know a lot more than most people. In fact, the spectrum of the noise does affect what happens to phase at any given frequency, but of course then y'all have to set a measurement bandwidth as well. (Otherwise y'all just wind up with a wide-spread phase noise that looks like the whole noise floor, after all.)Quantization causes phase error in the same amount that it adds noise. Frequencies near the sample rate don't have any time-resolution problems beyond any other frequency, of course their phase noise goes up, because the period corresponding to 360 degrees goes down. You still have good phase resolution, even at high frequencies, though, with 16 bits.
Yeah, there it is: http://www.audioasylum.com/audio/general/messages/43179.html
I think that the churn around that FAQ is part of what got JJ disgusted with everything.
I read the FAQ here, it's where I found out that most people don't want to learn, instead they want to pass off insults as opinions.
Filters are a different story, indeed. There's a couple of lurkers here who could answer the questions y'all got, I'm sure.
DSD is noise-shaped PCM. It's an extreme example that shows clearly why dither and noise-shaping aren't the same thing.
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Follow Ups
- Why, a lot of good questions... - Silver Eared John 12:37:37 11/15/05 (5)
- Re: Why, a lot of good questions... - macaque 14:12:20 11/15/05 (4)
- Re: Why, a lot of good questions - Silver Eared John 15:48:02 11/15/05 (3)
- jneutron has been talking about a much lower threshold - Commuteman 11:22:25 11/18/05 (2)
- Threshold for what? - Silver Eared John 13:52:13 11/18/05 (1)
- Just got inta town...what'chall talkin bout? - jneutron 09:32:17 11/21/05 (0)