Re: varying a synthdef with respect to input frequency

Thanks for the link and the explanation! I can see I've got more to learn.

Regards,
Bill

On Wed, Mar 24, 2021, at 7:36 PM, [email protected] wrote:
> On Thu, Mar 25, 2021 at 5:36 AM <[email protected]> wrote:
> > And given the values of freq and cutoff, it prints 200. What I want is to be able to do the same kind of comparison, but on a control signal, but this doesn't compile (if that's the right term). The only difference is that freq and cutoff are now control signals.
> >
> (
> var freq = DC.kr(300);
> var cutoff = DC.kr(310);
> z = if (freq > cutoff, 100, 200);
> z.postln;
> )
> 
> Pressed for time at the moment, so, short answer: read this --
> https://supercollider.github.io/tutorials/If-statements-in-a-SynthDef.html
> 
> "The only difference is that freq and cutoff are now control signals."
> That isn't the only difference. It means that 300 and 310 now exist in
> the server only. The true and false functions are *language*
> constructs. They don't know the server values. Also, postln is for
> language side values.
> 
> If you use the UGen-if-interpolation style, you'd get:
> 
> (
> var freq = DC.kr(300);
> var cutoff = DC.kr(310);
> z = if (freq > cutoff, 100, 200);
> z.postln;
> )
> 
> -> a BinaryOpUGen <<== this is telling you it's a server thing
> 
> (
> {
>     var trig = Impulse.kr(0);
>     var freq = DC.kr(300);
>     var cutoff = DC.kr(310);
>     var z = if (freq > cutoff, 100, 200);
>     // z.postln; nope
>     Poll.kr(trig, z);
>     Silent.ar(1)
> }.play;
> )
> 
> UGen(BinaryOpUGen): 200
> 
> *But* when you have a lot of these, I think my suggestion will be more
> efficient.
> 
> hjh
> 
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