[sdiy] Filter Musings

[dan snazelle]

i thought  having multiple filter  cores in parallel with delay added was how transversal filters or FIR filters were made?

or am i completely incorrect on that?

(i have actually been very interested in finding ways of trying those filters out somehow)



dan


snazzyfx.com

On Jan 29, 2010, at 1:36 PM, David G. Dixon wrote:

>> 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?
> 
> I think you would simply have two identical filters in parallel outputting
> two identical responses, just like if you patched the same output to two
> separate filters with the same settings.  In other words, nothing special.
> 
> Now, if you put the filters in series, then you would have a single filter
> with twice the poles.  In fact, this is exactly how higher-order filters are
> built.
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>