[PD] [FIR~] , [equalizer] and [biquad~] ... can i make [equalizer] and [biquad~] act like [FIR~] ?

ix at replic.net ix at replic.net
Sun Apr 3 12:38:30 CEST 2005

On Sat, Apr 02, 2005 at 02:15:26PM -0500, andy graybeal wrote:
> hey folks,
> With [FIR~] you can draw in a graph to make the eq the way you want it.  
> I don't understand [FIR~], but it does neat sounding things.
> I'm wondering if I can draw inside of a graph and control [equalizer] 
> which eventually controls [biquad~]  (because there is no way i'm 
> capable of understanding [biquad~] at this point in time) just like the 
> way [FIR~] works? 
> some of you may think, why don't i just use [FIR~] .... well [FIR~] 
> seems to sound a lot different than [equalizer] & [biquad~].  it seems 
> to have some kind of phasing in it for one.  i also haven't figured out 
> how to get it to 'cut' when i go 'negative' into the graph.. it seems to 
> not get any quiter, but louder.  i know i'm not understanding how it works.
> the only way i can get a graph readout of what [equalizer] and [biquad~] 
> do now is if i use filtergraph.pd (i forget who wrote it).. but it 

i cant find filtergraph.pd, but i made something similar since biquad on its own is useless (unless youre a scientist, maybe).. http://whats-your.name/pd/gui/eq.png

> sweeps from 20Hz to 20kHz.. and outputs a response into a graph from 
> that.   this is awesome!! accept it takes a while, and i imagine it's 
> not the most cpu friendly thing.
> -andy
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