[PD] Re: [PD-announce] PWM in Pd

[padawan12]

[>~ 0] sort of does it, you only get two values, either a zero for zero or less
or a one for anything else positve.


On Fri, 26 May 2006 19:04:58 -0400
"Chuckk Hubbard" <badmuthahubbard at gmail.com> wrote:

> I was experimenting with this:
> 
> [num\
> |
> [osc~]    [num\
> |         /
> [+~]
> |
> [*~ 1000000]
> |
> [clip~ 0 1]
> 
> It works for making a signal just 0s and 1s, but the osc input would
> have to be scaled to make the width change linearly with the control.
> I guess an appropriately scaled phasor~ should do it.
> I was searching for ways to create 2-bit audio in Pd, then amplify,
> but I couldn't do it.
> 
> 
> On 5/26/06, Frank Barknecht <fbar at footils.org> wrote:
> > Hallo,
> >
> > Hans-Christoph Steiner hat gesagt: // Hans-Christoph Steiner wrote:
> >
> > > That  example (I am looking at K01.pulse.width.mod.pd from 0.38.4)
> > > is very  simple, but as it is, it is not usable.  Notice how the LOW
> > > and HIGH  change values.  PWM needs be 0 for LOW and 1 for HIGH.
> >
> > I just found a *veryvery* simple solution to get rid of the DC
> > wandering: Just scale the signal so that it's always larger than the
> > range (0,1) with e.g. [*~ 10] and then use [clip~ 0 1] to clip excess
> > values outside that range. Voila, DC's gone.
> >
> > Ciao
> > --
> >  Frank Barknecht                 _ ______footils.org_ __goto10.org__
> >
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> 
> 
> -- 
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