[sdiy]Do you need to add more functions to your favorite LP4P VCF ?

[Dave Manley]

m.bareille at free.fr wrote:
> Bonjour ,

> Ok, i am going to rewire my sound card, record samples with the VCF as this, take
> pictures of each of the 16 curves with the spectrum analyser and add them to my
> page.

This will be very interesting to see.  By the way, are you using a sw 
based spectrum analyzer?  I'd be interested in recommendations for a PC 
based analysis tool.

> 
> But as i often say : my best and most accurate measurement tool are my ears and
> from what i have heard from this multimode VCF, i wont go back to the simple
> LP4P never mind if the BPs or notches are not absolutly perfect! 

Agreed! What matters most is the sound, not a pretty picture.  Still, 
given 1% resistors how different will one VCF sound from the next?  It 
would be interesting to run A/B comparisons of a perfectly adjusted VCF 
next to a "detuned" VCF.  Is this amount of variation important or just 
so much nerd talk?

-Dave