Archive of the former Yahoo!Groups mailing list: MOTM

I too have a V-Drum set. I hadn't thought about using it to trigger
the modular directly, but it seems like an idea with possibilities.

The biggest problem is with false triggering. I think the simplest
way to address this problem is for you to have a circuit that
compares every impulse on all the pads and initiates a trigger for
the pad with the largest impulse. The difficulty here is that you
could hit more than one pad at a time, or more than two if you use
your feet.

You also need to have a delay time between triggers for each pad to
prevent multiple triggers from just one hit.

A sensitivity control could either control the amplified gain of the
signal prior to triggering, or could actually set the level required
to generate a trigger with a comparator.

I don't think noise is too much of a problem, but hitting anywhere
on the kit, including the stand can potentially generate an unwanted
impulse. Even an overenthusiastic fellow band member can generate a
false trigger by jumping around.

It's a difficult problem, that I've never seen solved entirely to my
satisfaction. I use my kit for recording only, and I always edit
the midi stream, so I'm very aware of all the false triggering that
does occur.

Paul Haneberg