TB Sequencer Replication by Software (was another @#!! TB th

[cyborg0 at GlobalEyes.net]

> > I seem to remember noticing that a 303 slide lasts for the life of a
> > note - not just for the first part of the note
> 
> That makes sense considering the electronics involved

I dont believe so. I think that the slide info comes an the end of the
step that will be slid from. Its seems to simply switch a cap/resistor
circuit in and out of the opamp feedback stage just before the next CV
is applied thereby limiting the rate of change of the cv circuit which
causes an audible pitch bend as the circuit slowly reaches the next
voltage being applied to the opamp. This circuit is just DYING to be
reinvented, modernized, and messed with..
Perhaps switching diodes in or out of circuit to limit the slides to
either up only or down only. This would be great for live use.
OR, switching various resistors that cause a known time constant in and
out of the circuit.
OR, how about a 16 step slide sequencer that runs seperate of the 303 or
whatever V/oct synth you have, and has loop points that can be reset on
the fly and you can set each individual steps slide time? Its not that
hard to do, believe me! :)) 

Just 16 toggles, leds, a delay knob, and 16 pots ( of course, the pots
would have to have a center detent position thats set for "true" 303
slide)a sync24 signal,a binary counter, a 4-16 mux, couple of trannies
and an opamp. Hell, for added whoopee throw in a +-1 volt summer circuit
to emulate the up/down function of the 303!!
Dont even need an scope!
(well, i do, but, yknow, its like a good friend to me)
GET HOT!
rob