Hey list,
I just did a search in the list-archive and, yes, I realize that there was a dicussion on biquad~ back in April, but the thread referred to a link that is now broken. Suffice to say, it seems the programming of this external could be a bit more user-friendly, targeted toward the people who are likely to actually USE pd, not people with advanced degrees in math. (If you fall into both categories, more power to ya). If I could just get some help here, I'd like:
f(x, a) = (ff1, ff2, ff3, fb1, fb2) where these are the biquad coefficients for x = notch frequency and a = attenuation
While I understand how it's useful to have tools for building filters in any DSP software, it's too bad this isn't also wrapped up as a more straightforward notch filter. Or maybe I'm just being a wuss here. I'm sure there's someone out there who could implement this as an external.
Thanks,
David
homepage: http://www.davidgolightly.net