[sdiy] Novel Sequencer?

[Matthias Herrmann]

> 
> I would call it a "DAC".
> 
> 2 modules come to mind: Fonitronik MH11 and XAOC Drezno.
> 
> Roman

Well, my MH11 uses an ADC to voltage control the on/off of the 8 steps of the
sequencer (8-bit ADC). But in the sequence there is always only one steps CV
routed to the output.
Another sequencer i was working on would use a divider IC to trigger 8 stages
that would be summed, thus creating kind of arpeggios.

As i understand the OP in the 'Novel Sequencer' multiple stages would be summed
(while triggered by individual trigger inputs).
In fact this reminds me more of the Klee2 sequencer, where all active steps are
summed and more than one step can be active (shift registers). And yes, the
Klee2 has some pre-scaling of the range, so that one ends up with more musical
values.


Matthias


> 
> W dniu 2017-08-14 o 15:34, Martin Klang pisze:
> > We're about to put out a new Eurorack module which I think might be a
> > new type of sequencer. Before I make any such bold claims in public,
> > perhaps some of you on this list can tell me if/why I'm wrong!
> >
> > The module will be called Tonic, and I describe it tentatively as an
> > additive interval sequencer.
> >
> >
> > The idea is simple: there are a number of fixed pitch intervals which
> > can be triggered either manually by a pushbutton or by an incoming
> > trigger. So each interval has a button and a trigger input. There's a CV
> > output which sums all the active intervals. The trick here is the
> > summing: if you have two intervals of e.g. +2 semitones and +3 semitones
> > active, then the CV output represents +5 semitones (on 1v/oct scale).
> >
> > You might recognise this as a variation on something you can easily do
> > with a CV mixer: feed in a set of triggers, 'tune' the level for each
> > one, and out you get a pitch sequence. The advantage here being that a)
> > the output doesn't depend on the level of the trigger and b) the
> > intervals are in tune.
> >
> >
> > If with our scheme you have four intervals tuned to 1, 2, 4 and 8
> > semitones then you have of course 2^4 binary combinations and you can
> > produce all semitones from 0 to +15.
> >
> >
> > Our module has five fixed and one adjustable interval, and adds a
> > trigger output which goes high when any of the inputs are active.
> >
> >
> > You could argue perhaps that it's not really a sequencer, since the
> > triggers must be generated elsewhere. But it turns triggers into
> > melodies, which is nice. And the rest, as far as I'm concerned, is
> > semantics.
> >
> >
> > so... prior art?
> >
> > Martin
> >
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