[PD] help making a square wave?

[Chad Wood]

You could probably just make a table with two points in it (-1,1) and then
use a phasor at the frequency you want to drive a tabread~.  Make sure you
multiply the phasor output by 2 to properly index your table.  This is just
off the top of my head, but I think it should work...

Chad

> -----Original Message-----
> From: pd-list-admin at iem.kug.ac.at [mailto:pd-list-admin at iem.kug.ac.at]On
> Behalf Of David Merrill
> Sent: Friday, March 07, 2003 11:39 AM
> To: pd-list at iem.kug.ac.at
> Subject: [PD] help making a square wave?
>
>
> Hi there -
>
> I've been trying to make a square wave, but my pd knowledge is a little
> rusty.  I know of osc~ and phasor~ for a cosine and sawtooth wave,
> respectively, but I haven't been able to find a square-wave generator.  I
> think I ought to be able to use an osc, and just output 1 when the output
> is positive, and -1 when it's negative, but I've become hung on the
> details.  Is the following a good overview of what needs to be done?
>
> osc~ -> snapshot~ -> moses 0 -> b (one for each moses output) -> -1.0 or
> 1.0 -> sig~
>
> It seems like using snapshot to turn every sample into a number so that
> moses can divide them around 0 is inefficient.  Is there an object that
> deals with signals that can do what moses does?  (Or just a better way to
> get a variable-frequency square-wave in general?)
>
> much appreciated,
> David Merrill
> dmerrill at media.mit.edu
>
>
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