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WIGGLING 'LITE' IN GUEST MODE

Patching a Notch Filter from a Bandpass
MUFF WIGGLER Forum Index -> Synthesis Techniques  
Author Patching a Notch Filter from a Bandpass
c0rpse
I figured that if I subtracted a bandpass signal from the dry signal I would get a notch. Apparently this is not the case because of phase alignment.

Instead you must put the bandpass in a feedback loop on the subtractor.
Code:

               +-----+
 INPUT+------->+     |
               | SUM +------------+--> OUT
+------------->+     |            |
|              +-----+            |
|                                 |
|                                 |
|  +--------+      +----------+   |
+--+ INVERT +<-----+ BANDPASS +<--+
   +--------+      +----------+


It's a pretty basic concept, but this forum section can use some love.
damase
nice one, thanks
hinterlands303
I gave this a go last night with an Intellijel uVCF and Happy Nerding MIA (to do the summing and inverting) and it sounded great! Thanks for the tip.
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