Hallo, martin brinkmann hat gesagt: // martin brinkmann wrote:
Claude Heiland-Allen wrote:
cpole~ czero~ rpole~ rzero~ have signal inlets for filter control, so i assume sufficiently smooth changes will not cause clicks
that is true, but it looks like no one has made a (usual lp,hp,etc.) filter with these objects until now.
Except Miller. [1]
Though I agree that some more of these would be handy. I tried to make a biquad~ clone with the elementary filters, but failed so far. I assume from [2] that the transfer function of two rzero~ and two rpole~ in series should be the same as a biquad~, however I don't know how to convert the ff1, ff2, ff3, fb1 and fb2 coefficients of biquad~ into the coefficients to use at the second inlets of the elemetary filters. Can anyone help?
[1] http://crca.ucsd.edu/~msp/techniques/latest/book-html/node160.html [2] http://crca.ucsd.edu/~msp/techniques/latest/book-html/node136.html
Ciao
Frank Barknecht _ ______footils.org__