[sdiy] Novel Sequencer?

Quincas Moreira quincas at gmail.com
Mon Aug 14 15:51:12 CEST 2017

That sounds like an awesome idea!  I would add to it a simple 8 step
trigger sequencer, maybe as an expander module? That way it can be fully
self contained. Also, why not make all 5 intervals adjustable?



On Mon, Aug 14, 2017 at 10:34 AM, Martin Klang <mars at pingdynasty.com> wrote:

> 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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Quincas Moreira
Test Pilot at VBrazil Modular
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