Doepfer

<code_pig@y...> wrote:
> when one uses a LPF and a HPF together, what is created is 
> a notch filter (see the A121 documentation for a graphic 
explanation).

keven, paul,
thanks for the info and the recources.  i'm confused about the 
LP=HP=Notch idea though.  clearly, by listening,  the result of 
these 2 ms20 filters in series is either HP only, LP only, or BP 
(vaguely BP, when top and bottom are cut off, leaving the 
middle.)   
to imagine a picture of the graphical representation, i think the 
curve would look like an 'M' but only during very high resonance 
settings. w no resonance, however, the center of the 'M' will 
become flattened or even bell-shaped across the top as the 
peaks are reduced to 0.   i think to achieve a notch they would 
have to be in parallel which is not an option on the korg.  

at any rate, thanks.   i have a much clearer idea as to what is 
going on behind these sounds i like.
-duff