[chuck-users] Gen10.coefs abuse?

[dan trueman]

hi Atte, this is cool; pretty nifty way to get some subtle variation  
in the overtones. yer right, coefs() is a fairly expensive function;  
it recalculates the entire lookup table. in a future version, i  
suppose we could make the size of the lookup table user controllable  
so there would be some control over how expensive this recalculation  
is (i think the table is 1024 long at the moment), but at the moment  
i don't see any way for you to do this more efficiently.

dan

On Jun 26, 2007, at 10:10 AM, Atte André Jensen wrote:

> Hi
>
> In my eagerness to play with GenX I coughed up the following code:
>
> Phasor osc => Gen10 g10 => dac;
> int i;
> [1., 0.5, 0.3, 0.2] @=> float a[];
> 440. => osc.freq;
> while(true){
>      for(0 => i; i< a.cap(); i++){
>          Std.rand2f(-.1,.1) +=> a[i];
>          if(a[i] < 0 || a[i] > 1) {
>              Math.round(a[i]) => a[i];
>          }
>      }
>      g10.coefs(a);
>      50::ms => now;
> }
>
> Fortunately the update is glitch free, unfortunately it seems that
> coefs() is a fairly expensive function :-( I realize that GenX  
> might be
> supposed to be used with static coefs, but the above seems like it  
> holds
> a lot of potential. It there a way to to what I do more efficiently or
> am I simply not supposed to do this?
>
> -- 
> peace, love & harmony
> Atte
>
> http://atte.dk       | http://myspace.com/attejensen
> http://anagrammer.dk | http://atte.dk/compositions
>
> _______________________________________________
> chuck-users mailing list
> chuck-users at lists.cs.princeton.edu
> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users