30 Mar
2005
30 Mar
'05
4:29 p.m.
On Wed, Mar 30, 2005 at 09:23:26 -0800, Brad Fuller wrote:
I fooled around with the numbers, but I can't quite get what I want.
Maybe you can help me. what I want to do is have a brick-wall at 5500Hz
(with some adjustments below it, though I think I've got that with the
settings of the parametric bands.) Do you think your hi-shelf with a
gain of -70 and a slope of (input number here) is just too shallow of a
slope to this filter for a wall?
You wont be able to get a really serious brickwall with the highshelf, its
only 2nd order IIRC, you could try stacking a load of lowpass filters set
to the same cutoff, but you will get some sreious phase shift I think.
Brickwall filters, by thier very nature tend to have side effects or be
very CPU intensive.
- Steve
Thanks Steve, I'm trying your "triple band
parametric" and I can't get
the High-shelving freq to cut off fast enough. Perhaps I have the args
wrong: I have the last args as: -70 5536 1, but it seems a gentle
decline. Am I doing something wrong? I'd like to have a brick at 5k. Can
that be done?
You can push up the 1 to a higher number, but it will effect the response
near the cuttoff, that may not matter to much for your situation.