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Re: Omni Filter/VCO

2001-11-20 by drmabuce@yahoo.com

Hi Colin,


> I find Moog type ladder filters a bit too syrupy for creating hard
> percussive attack type sounds
> Even with the resoannce cranked right up,
> Moog filters just sound soft and liquidy all the time.
> Can the Omni Filter create these types of resonant hard attack 
tetxures?
> 
My Omni filter cuts like a razor, especially in band-pass mode. I must 
confess that it's hard to use text to communicate timbral qualities to 
other people. I'm a fan of what I consider "bite" in a VCF. So I'm 
gonna assume we like the same thing in filter response. My experience 
is that almost any VCF design with a slope greater than 12db/Oct 
(18pole or more) gives me the quality I like.....But the 'bite' is 
more a function of the speed of the CV attack. Some older filers have 
CV summing amps based on some pretty slow op amps and as these 
critters age they can slew the attack right off an envelope. This is 
not a consequence of the core filter design, though. Without going 
into a lot of (probably irrelevant) comparisons, suffice to say that 
the CV response of my Omni filter is plenty quick on the uptake. It 
has no trouble keeping up with the output of Wiard's envelator which 
has a brutally fast attack time. I recommend it unreservedly.


> 
> Are the VCOs easy to calibrate?
> Because I'm not much of techie with these things just yet.
> 
> 
Can't speak to that. I don't have a wiard VCO, just the digital 
waveshapers. But I notice that you got a response from Olivier Gerber. 
 Based the meticulous (and gorgeous,BTW) nature of his music - I'd 
certainly cite him as an expert in keeping Wiards in tune

> OK so the Wiard is still in production I gather?

you gather correctly. the Wiard is very much in production. I have 
been getting stuff all this fall. Check out some of the recent mesages 
from folks who just got wogglebugs delivered.

 
best,
-doc

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