[PD] [PD-announce] new GUI obect: filterview, for generating and seeing biquad coefficients

[Hans-Christoph Steiner]

Yeah, I see that on my computer too.  It was working well for me in development, I guess I was mostly using ./filterview.tcl...

.hc

On Apr 4, 2012, at 3:37 PM, Mike Moser-Booth wrote:

> Thanks, Hans, it's great to see this! Unfortunately, it's not really
> working well for me on OSX 10.5. It seems that once I click on it, the
> cutoff just follows the mouse around, even after the mouse button is
> released. And then eventually the spinning beach ball comes up. (This
> is using the Pd-extended 0.43 build from March 23.) When I just run
> the tcl script from the terminal, though, it works fine.
> 
> .mmb
> 
> On Tue, Apr 3, 2012 at 3:03 PM, Hans-Christoph Steiner <hans at at.or.at> wrote:
>> 
>> 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
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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> 
> 
> 
> -- 
> Mike Moser-Booth - mmoserbooth at gmail.com
> Master's Student in Music Technology
> Schulich School of Music, McGill University
> Centre for Interdisciplinary Research in Music Media and Technology
> 
> "Words that make questions may not be questions at all." -- Neil deGrasse Tyson
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