[sdiy] Filter Musings

[Ian Smith]

Hey all, 
 
I was going through a variety of schematics for ladder filters (Moog and the diode spin-offs) and was wondering what would happen if you put two or more of the filter "cores" in parallel in the circuit. Would it just be like having multiple filters controlled by the same CVs, or would it add poles to the filter? Is this just a silly question like my "More-Pole Filter" post a while back?
 
On a hopefully helpful note, I found this paper on the analysis of the Moog transistor ladder filter and the diode spin-offs:
http://www.timstinchcombe.co.uk/synth/Moog_ladder_tf.pdf
 
Just in case no one else has seen it.
 
 
-Ian (been looking at schematics too long) Smith 		 	   		  
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