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Subject: Re: [motm] Q re: MOTM CV-->Deltalab Effectron (a bit OT)

From: media.nai@...
Date: 2003-01-08

>Yep. Running a CV from any number of MOTM modules will in fact vary the
>delay time--with interesting and sometimes not so interesting effects.

I haven't played with anything Deltalab in years, but I have other delays
that have CV inputs. On thing you can do is sync flanging to filter sweeps
and other events with an MOTM-320.

What I haven't been able to do is use the LFO to control a pitch shifter
(PCM80) and a key-tracked patch such that the timbre modulates but the note
remains the same. I think might be a linear vs. log problem.

>01 What sort of CV range (in volts) does this device want?

I have no idea (how's that for a helpful answer?? :) However, if my memory
serves me correctly, the Effectron works by changing the speed of its clock
like a BBD delay. (I wish my SDD-2000 had a CV input.) Depending on the
initial settings, it could go out of range with a negative voltage. So I
would try 0 to +5V.

>02 Has anyone had luck sampling CV's (with the "hold" feature) and then
>playing them ∗out∗ of the 'tron to the MOTM. I only seem to get burps and
>hiccups (of control).

I doubt it could work with its clock stopped. Afaik, the hold feature is a
tap. So it essentially plays a short loop of data. Check to see if the
input is AC-coupled. If an input voltage was steady enough to work over
the range of a loop, it might not get past the cap.

>03 Seems to me this thing is ripe for CV input hacking. Esp into the
>"feedback" control. Anyone tried this?

Someone might have tried. Does the feedback control use a VCA?? If not,
it is often possible to replace a pot with a vactrol.