[PD] Chebyshev waveshaper

[sebfumaster at aol.com]

I didn't say that it was like cheby, I just mentioned that cheby already existed.
The point is to control a crossfading of harmonics at audio rate.
In cheby~ you can control the weight of harmonics at message rate, but you can only set the order by creation 
argument.
In tcheb~, you can only have 1 "harmonic" (or a crossfade between 2 executive harmonics) but you can choose the harmonic to be anywhere up to 255 at signal rate.
I just happen to like the sound of the order of polynomial being rolled through a linear crossfade at signal rate, which you cannot do with cheby~.



-Sebastian



-----Original Message-----
From: Alexandre Torres Porres <porres at gmail.com>
To: sebfumaster <sebfumaster at aol.com>
Cc: Alexandros Drymonitis <adrcki at gmail.com>; pd-lista puredata <pd-list at iem.at>
Sent: Sat, Jun 6, 2015 2:14 pm
Subject: Re: [PD] Chebyshev waveshaper


 
Hi there, if you can't control the strength of harmonics like cheby, it's not like cheby~ at all, and I actually fail to see the point here.  
   
  
  
btw, cheby~ should have the option to generate normalized tables for waveshaping, it's hard to work with it when it doesn't, you can always blow it up easily.  
  
   
  
  
cheers  
 
 
  
  
2014-04-21 14:39 GMT-03:00    <sebfumaster at aol.com>:   
   
    Sorry bout that, all it is is a number box connected to a line~ (to make it smooth)
      
      It should be in the zip now. Thanks for the heads up     
      
      
      
      
        -Sebastian      
       
        
         
         
-----Original Message-----         
 From: Alexandros Drymonitis <         adrcki at gmail.com>         
 To: sebfumaster <         sebfumaster at aol.com>         
 Cc: PD-list <         pd-list at iem.at>         
 Sent: Mon, Apr 21, 2014 8:20 am         
 Subject: Re: [PD] Chebyshev waveshaper         
          
          
           
            
Opening tcheb~-help.pd I get this in the console:             
 smoother~            
 ... couldn't create            
             
            
 There's a smoother~-help.pd included but no smoother~.pd or smoother~.pd_darwin or a .c file...           
           
           
           
            
            
On Mon, Apr 21, 2014 at 3:30 AM,             <sebfumaster at aol.com> wrote:            
             
              Hi all,               
                If anybody's interested I made a chebyshev wave shaper external. it's on the pd forum                http://puredata.hurleur.com/sujet-10371-chebyshev-waveshaper-controlled-signals               . I know there's already creb/cheby~ but this is slightly different because you cannot set the "harmonics" but you can control the order with a signal. adjacent orders of polynomial are interpolated with the pd cosine table which I have no idea how to use like the cos~ object but I did it anyway and it seemed to work.              
               
               
               
               
                Suggestions would be appreciated, this is only my 3rd small c program              
               
               
               
               
                -Sebastian              
              
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