[PD] algorithms for drawing filter response curves

Claude Heiland-Allen claude at goto10.org
Mon Feb 7 19:02:22 CET 2011


On 06/02/11 23:12, Hans-Christoph Steiner wrote:
>  now I'm looking for the algorithms for
> generating a plot of the frequency response of a given set of biquad
> coefficents?

See perhaps:

http://www-users.cs.york.ac.uk/~fisher/mkfilter/

In particular:

http://www-users.cs.york.ac.uk/~fisher/software/mkfilter/current/complex.C
global complex evaluate(complex topco[], int nz, complex botco[], int 
np, complex z)

http://www-users.cs.york.ac.uk/~fisher/software/mkfilter/current/genplot.C
static void computefr(complex fr[], int nsteps)


Claude



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