[sdiy] Random trigger delay?

[mark verbos]

I have been thinking baout this in the last week actually. i was 
imagining a sequencer that allowed each step to be nudged earlier or 
later with a knob. Then you could build up a "groove" for that measure.

using the Blacet MIDI to sync chip I figured you could send the 24 PPQ 
pulses to counters to get all 96 pulses for a measure. Then each step 
could have a rotary switch to select which pulse it sends through. But, 
then what about the first step? I guess it could wrap around to the last 
steps, but then it will play nothing when you start. I would like also 
to make a version that works from a regular clock and get rid of the 
rotary switches.

The whole idea started with trying to imagine a box that could make 
shuffle like a TR-909. In that case I think you have to split up the 
16th notes so that they alternate. first uneffected, then delayed. For 
that a trigger delay circuit would work.

some thoughts.

mark

John Speth wrote:

> > >I just had an apostrophe: How about a trigger ??>delay
> > >thay randomizes? This would go post-midi and >make the
> > >midi sound a bit less mechanical.
>
> > I used to have some Cakewalk CAL scripts to add degrees of
> > randomness to the notes in sequences...kick the timing up &
> > down, play with the note velocity, etc.  A realtime box that
> > did it could be cool as well.
>
> Me too!  I tried using Cakewalk CAL scripts to add randomness to 
> perfectly timed MIDI sequences in an effort to take the stiffness out 
> of the sequences and, hopefully, to gain a more human feel.  My 
> efforts didn't sound very good to me.  I figure that there's a little 
> bit of regularity in sloppy undisciplined human playing that random 
> randomness can't quite fix. 
>
> So I think first order randomizing really isn't very useful.  You need 
> to go to that second level and maybe beyond.
>
> If you make your randomizing trigger delay voltage controlled, you can 
> couple your random trigger with a CV output driven with your sequencer 
> and you might get the results you're looking for.
>
> John Speth
> Molectron Detector, Inc.
> http://www.molectron.com
> mailto:johns at molectron.com
>