Hey Hans
thanks for this one! I was using it in max ten years ago, I am happy
to be able to use it again in PD, nice shot!
I am testing it now, I tell you if I see something wrong, so far, it's
all good.
cheers
Julien
Announcing [filterview], a new GUI object for generating and
visualizing biquad coefficients. It allows to you manipulate the
filter band, frequency, and gain using your mouse. The magnatude
and phase are then graphed in realtime as the parameters changed,
and the list of biquad coefficients are output. It is inspired by
the [filtergraph~] object in Max/MSP. Thanks to Mike Moser-Booth
for doing all of the math behind the scenes.It requires Pd-extended 0.43 to run. I just got to a beta state, it
works well for me, but it does crash Pd sometimes when you close a
patch with [filterview] in it. Try it out and let me know how it
works for you.http://puredata.info/downloads/filterview
Also, as a side note, this object is an experiment with a new way of
writing GUI objects. It started out as a pure Tcl program, and the
GUI part still runs as a standalone Tcl program (try running
./filterview.tcl from the Terminal). This makes development and
debugging vastly easier. Additionally, I tried to move more of the
GUI code to the Tcl side, so you'll see that it uses fewer
widgetbehaviors, and uses Tk's bind feature quite a bit..hc