[L2Ork-dev] dsp chain indeterminism

[Matt Barber]

A virtue of keeping the phase is that it remains relatively continuous even
with wacko dynamic patching

On Mon, Jun 25, 2018 at 5:31 PM Jonathan Wilkes <jon.w.wilkes at gmail.com>
wrote:

> Ah yeah, nevermind.  I forgot about the phase. So:
>
> 1. frequency is 440
> 2. a connection is made to [sig~ 0]
> 3. whatever the phase happened to be at the time of the connection is
> applied to frequency 0
>
> I guess the phase could be reset to zero at graph-building time. On
> the other hand, people
> do such odd things with dynamic patching-- who knows if this would
> break some of that
> insanity.
>
> -Jonathan
>
> On Mon, Jun 25, 2018 at 3:55 PM, Matt Barber <brbrofsvl at gmail.com> wrote:
> > There are also ways of noticing when a connection is attached to the
> inlet
> > and that the connection is a signal, and you can reset phase at those
> times
> > instead.
> >
> > On Mon, Jun 25, 2018 at 3:52 PM Matt Barber <brbrofsvl at gmail.com> wrote:
> >>
> >> Only good way to do this is to reset phase when the dsp graph changes.
> >> [cyclone/cycle~] does this, in fact:
> >>
> >> static void cycle_dsp(t_cycle *x, t_signal **sp)
> >>   cycle_gettable(x);
> >>     x->x_conv = 1.0 / sp[0]->s_sr;
> >>     cycle_phase_reset(x); // <------------------------------RESET PHASE
> >>     dsp_add(cycle_perform, 5, x, sp[0]->s_n,
> >>     sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec);
> >> }
> >>
> >> On Mon, Jun 25, 2018 at 3:40 PM Jonathan Wilkes <jon.w.wilkes at gmail.com
> >
> >> wrote:
> >>>
> >>> Hi list,
> >>>
> >>> Check out the following patch (attached):
> >>>
> >>> 1. Click [bang(. You'll get a block of ones.
> >>>
> >>> 2. Disconnect the output of [sig~ 0] from the input of [osc~ 440].
> >>>
> >>> 3. Click the [bang( again. You'll get output based on the floatarg 440.
> >>>
> >>> 4. Now re-connect [sig~ 0] to [osc~ 440]. You'll get indeterministic
> >>> output.
> >>>
> >>> Is there any workaround to make the output deterministic in this case?
> >>>
> >>> -Jonathan
> >>> _______________________________________________
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> >>> https://disis.music.vt.edu/listinfo/l2ork-dev
> >
> >
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