hello Roman,
it's a nice filter.
here is a butterworth low pass filter that came with exemple H13. i just change expr to expr~ to allow an audio control of the cutoff frequency.
cyrille
Roman Haefeli a écrit :
hi cyrille
i am glad to hear that someone has similar thoughts. i would love to have some filter abstractions based on pd's built-in elementary filters. however, my understanding is far too limited to create them myself.
i once ported and adapted a peakfilter from millers examples into pdmtl abs (are they now part of pd-extended, actually?). it is called
[fx.filter.peak.sig~]
the sig stands for audio frequency inlet and audio q inlet. especially modulating the q parameter with a signal is fun.
to hear it in action (besides a lot of other modulations): http://www.netpd.org/sessions/2007-08-17_nordatlantik.mp3
roman
On Fri, 2007-11-23 at 20:54 +0100, cyrille henry wrote:
hello,
i know there is a lot's of filter externals available for pd, but i'd like to use some using rpole~ / cpole~ etc. my main motiviations are :
- i don't like using externals
- this object allow an audio control of the cutoff frequency
as there is not a lot's of exemples, i'd like to know if anyone used this objects to make good filter abstraction. or anyone have references in order to disign filter? (i'm looking for a low pass resonant filter by exemple)
thanks Cyrille
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