[PD] looking for a simple eq

[Tom Erbe]

This one from the archives is pretty useful

https://lists.puredata.info/pipermail/pd-list/2005-10/031738.html

> On Sep 27, 2022, at 2:50 PM, Roman Haefeli <reduzent at gmail.com> wrote:
> 
> On Mon, 2022-09-26 at 18:25 +0200, Jakob Laue wrote:
> 
> 
> 
>> Actually I just need simple low-cutting 
> 
> https://github.com/reduzent/netpd-instruments/blob/main/abs/fl_reshighpass_coeff.pd
> 
> 
>> from low to high frequencies and/or high-cutting from high to low
> 
> https://github.com/reduzent/netpd-instruments/blob/main/abs/fl_reslowpass_coeff.pd
> 
> Those two generate the coefficients that can be fed to [biquad~].
> 
> 
>> . A visual representation would be great.
> 
> The same coeffs that are fed to [biquad~] can be used to plot the
> frequency response (and phase response) with:
> 
> https://github.com/reduzent/netpd-instruments/blob/main/abs/fl_filterplot.pd
> 
> I don't deserve credit for them. They are based on abstractions created
> by Mike Moser-Booth.
> 
> Here is what the filterplot looks like:
> 
> https://www.netpd.org/fl-rhip.png
> 
> (screenshot of:
> https://github.com/reduzent/netpd-instruments/blob/main/abs/fl-rhip.pd
> )
> 
> Roman
> 
> 
> 
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