14 Feb
2010
14 Feb
'10
7:35 a.m.
On Sat, Feb 13, 2010 at 10:16:24PM -0500, Monty Montgomery wrote:
The only examples I know of are the FFT based EQ
in Jamin, and the octave band filters that come
with jconvolver.
Do you have some other examples ?
I'm aware of how to construct digital IIR filters
:-) I was hoping
you had a URL to a nice official analog topology. The specific
implementation details matter.
I'll make a nice drawing later. Right now I have
to finish my LAC paper !!
The channel EQ
you'll find on most digital mixers is
not linear-phase at all, nor acausal.
OK. Time to become incredibly overspecific:
Every digital EQ implementation I'm aware of for Linux is linear
phase. I wrote a few of 'em. Negative delays are perfectly possible in digital.
Well, if you
ignore the wallclock (assume a global system latency, and a local
negative latency within the system). It's just a semantic/terminology
argument at this point.
That's why I wrote 'operating in real time'.
Ciao,
--
FA
O tu, che porte, correndo si ?
E guerra e morte !