low = v2/v0 = (g^2)/(g^2 + g*k*s + s^2) band = v1/v0 = (g*s)/(g^2 + g*k*s + s^2) high = (v0 - k*v1 - v2)/v0 = (s^2)/(g^2 + g*k*s + s^2) notch = (v0 - k*v1)/v0 = 1 - (g*k*s)/(g^2 + g*k*s + s^2) peak = (v0 - k*v1 - 2*v2) = (-g^2 + s^2)/(g^2 + g*k*s + s^2)
allpass = 1 - 2*bandpass = (g^2-g*k*s-s^2)/(g^2+g*k*s+s^2) :-) I'm not sure about your peak filter. How did you build it? I would think peak = 1 + boost*k*bandpass (boost >= -1) Regards, Vadim -- Vadim Zavalishin Senior Software Developer | R&D Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28 10997 Berlin, Germany http://www.native-instruments.com Registergericht: Amtsgericht Charlottenburg Registernummer: HRB 72458 UST.-ID.-Nr. DE 20 374 7747 Geschaeftsfuehrung: Daniel Haver (CEO), Mate Galic -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
