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Cycling74 Max Externals (v6.1/v7)

cheb

An implementation of a Chebyshev recursive filter. It only generates a list of coefficients that can then be sent to an “iir~” object. The output can also be sent to a Max multi-slider to watch how the coefficients change with cutoff frequency, poles, and ripple settings. It can output a coefficient list in one of two orders, either "aabab…" or "aaa…bb…".

This is an implementation of the algorithm presented by Stephen W. Smith in his book “The Scientist and Engineer's Guide to Digital Signal Processing” 2nd edition.

iir~

This will do a IIR or recursive convolution based on an input list of float or double precision coefficients. Coefficients can be in one of two orders, either "aabab…" or "aaa…bb…". Handles both 32- and 64-bit MSP streams.

This version includes my first attempt to remove the “zipper” effect. This has made algorithm more unstable at the extremes of frequency. Future versions will have a settable ramp time.

XCode Project Setup

https://cycling74.com/forums/topic/writing-external-xcode-6-empty-project/

This also works with XCode 7.

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"C" Externals for Cycling74's Max MSP

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