[Faudiostream-users] PICO DSP Faust programmable card
PICO DSP Faust programmable card funding goal has been reached, see: https://www.crowdsupply.com/ohmic/pico-dsp Stéphane ___ Faudiostream-users mailing list Faudiostream-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/faudiostream-users
Re: [Faudiostream-users] variable saw
Will keep that in mind. Thanks! On Sun, 19 Sept 2021 at 11:27, James Mckernon wrote: > On 9/17/21, Roger Pibernat wrote: > > Thanks, I solved it with an envelope and a phasor > > This should work, but note that it will probably alias somewhat (more > noticeable at high or changing frequencies). The advantage of the > oscillators in oscillators.lib is that they are band-limited so won't > alias. But use whatever works for you. > > Cheers, > James > > > ___ > Faudiostream-users mailing list > Faudiostream-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/faudiostream-users > ___ Faudiostream-users mailing list Faudiostream-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/faudiostream-users
Re: [Faudiostream-users] variable saw
On 9/17/21, Roger Pibernat wrote: > Thanks, I solved it with an envelope and a phasor This should work, but note that it will probably alias somewhat (more noticeable at high or changing frequencies). The advantage of the oscillators in oscillators.lib is that they are band-limited so won't alias. But use whatever works for you. Cheers, James ___ Faudiostream-users mailing list Faudiostream-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/faudiostream-users
Re: [Faudiostream-users] variable saw
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 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 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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