Hi Julius,
On 08/23, Julius Smith wrote:
>
> Ok, sounds like they should be compared to the normalized ladder
> filter. In Faust / filters.lib, the second order case is called tf2sn
> ("transfer function, order 2, s-plane, normalized). I tend to use
> tf2snp which adds "p" for "protected". The ladder form provides easy
> bounding of the poles away from the unit circle by any small margin.
I do not know how to compare this implementation with tf2snp, all I can
say that for time-varying filtering, say,
F = vslider("f", 0, 0,1000, .1);
process = fi.tf2snp(0,0,1, 1,1, 2*ma.PI * F);
generates much more code than
F = vslider("f", 0, 0,1000, .1);
process = svf.lp(F, 1);
But please forget, I wrote this code just for fun because nobody else
replied to Oliver's email.
Oleg.
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