Thanks all for your input! I managed to do it with phasor and env, but
will take a look at all the suggestions.
On Sat, 18 Sept 2021 at 09:40, James Mckernon <jmcker...@gmail.com> wrote:
> It seems that there isn't one in the standard library.
>
> But the triangle wave in the standard library is made by integrating a
> square wave. Analogously, you can construct a var saw by integrating
> the pulsetrain oscillator, which is essentially a square wave with
> duty cycle parameter.
>
> import("stdfaust.lib");
> varsawN(N,freq,duty) = os.pulsetrainN(N,freq,duty) : fi.pole(p) : *(gain)
> with {
> gain = 4.0*freq/ma.SR; // for aproximate unit peak amplitude
> p = 0.999;
> };
> varsaw = varsawN(2);
> process = varsaw(220, hslider("duty cycle", 0.5, 0, 1, 0.01)) <: _,_;
>
> This looks and sounds right around the middle, but unfortunately it
> fades away to zero at either extreme (i.e. as it approaches saw
> shape).
>
> Not perfect, but it's a start.
>
> Cheers,
> James
>
> On 9/14/21, Roger Pibernat <rogerpiber...@gmail.com> wrote:
> > Hi,
> >
> > just starting with Faust, with quite a few years of SuperCollider behind
> my
> > back but no math background whatsoever.
> >
> > Is there such a thing as a variable saw wave oscillator in Faust? I'd
> like
> > to be able to modulate between saw <> triangle <> ramp. I cannot find it
> > in the docs.
> >
> > I thought I could maybe feed an en.ar() into a phasor, but it doesn't
> seem
> > to work (because an envelope is not a table?).
> >
> > How could it be done?
> >
> > cheers!
> >
> > Roger
> >
>
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