--- In Doepfer_a100@yahoogroups.com , "cuari7" <medejd@t...> wrote:

> I have a question for the forum about the Doepfer Comparator (A-
> 167 ).
> The website does not mention if this module can be used to "square
> up" audio waves, nor if it can be used for pulse-width modulation.
> Anyone can answer these questions for me
>
> thanx!
>
> cuari

hello cuari,

sorry, i've totally forgotten about your question.
yes, you can square up audio waves with an a167,
but the resulting square wave will not be bipolar
as usual (-5v to +5v), it will be unipolar positive
(0v to around +10v). you can do pulsewidth modulation
too via the In- jack. several weeks ago i tried to get
a pulsewave out of a self-oscillating filter (a105)
and it worked surprisingly well. the pulsewave was
far from being perfect (looked at it on an oscilloscope),
but sounded quite nice.

maybe we will have a patch example on www.modular-planet.de
soon, i've already emailed josef about the patch.

best wishes

ingo