mutable instruments yarns: midi interface price : $359.00

yarns is a midi interface providing up to 4 channels of cv/gate conversion, and providing some of the midi message processing features of mutable instruments' midipal, including arpeggiator, euclidean sequencer, and a sh-101 inspired step sequencer.

yarns provides 4 cv outputs and 4 gate/trigger outputs, which can be assigned to up to 4 voices. in single voice mode, note, velocity, modulation and aftertouch (or other cc) cv are produced, along with a gate, a trigger, and a clock/reset output. in two voices mode, two channel of note, modulation or aftertouch cv are produced, along with two gates, and clock/reset outputs. finally, in four voices mode, four pairs of cv/gate outputs are provided.



the 2 and 4-voice modes are available both in a "polyphonic" and "multitimbral" flavour. the former receives chords from one single midi channel and dispatches them to the voices; while the later provides independent monophonic parts - which can be addressed to different midi channels, keyboard ranges, or even velocity levels. various note priority modes (low, high, last) and polyphonic allocation schemes (voice-stealing, random, cyclic) allows you to fine-tune the cv/gate conversion to your playing style. each voice has a built-in digital lfo to interpret modulation wheel messages as a vibrato; can respond to pitch-bend messages; or can be smoothed with a glide/portamento control - no need for a dedicated module and patches to get the right response from a midi keyboard!

each part can generate sequences either through an arpeggiator/euclidean sequencer combo; or with a sh-101 style sequencer with step-by-step recording, storing up to 64 notes. the module can sync to an external midi clock, and generate a clock/reset output at any subdivisions of the midi clock.

other unique features include support for microtunings (either through standard midi messages or from a selection of historical tunings or indian ragas), just intonation, and an audio output mode which can transform one, two, or four of the cv outputs into simple digital oscillators.

specifications:
conversion modes
monophonic with note, velocity, modulation wheel, auxiliary cc/aftertouch cv.
2-voice polyphonic or 2-part multitimbral with two note cv and auxiliary cc/aftertouch cv.
4-voice polyphonic or 4-part multitimbral with four note cv.
4-part trigger conversion with midi note selection for each part.
clock/reset output in monophonic, duophonic, or trigger conversion modes.
polychaining mode handling half of the notes internally and forwarding the other half to the midi out.

midi processing
transposition.
split/keyboard ranges.
multiple voice allocation schemes in polyphonic mode (voice-stealing, random, cyclic).
multiple note priority modes in monophonic mode (lowest, highest, latest).
arpeggiator with up/down/up&down/random/chord/"as played" modes and 22 preset patterns.
64-note sh-101 style sequencer per part.
euclidean pattern generator.

conversion
1 v/oct and 5v gate/trigger standard.
micro-tunings (through midi tuning messages).
just intonation.
portamento, pitch-bend and modulation wheel (vibrato).
audio output mode replacing the note cv by a digital oscillator offering sine, square, pulse, triangle and sawtooth waveforms.

technical characteristics
8khz cv refresh rate, 48khz refresh rate in audio mode.
high-end 16-bit dac and voltage references.
12-point calibration table, adjusted in factory.
8 memory slots for storing/recalling all settings and sequences.
cortex-m3 arm processor guaranteeing blazingly fast response to midi messages, even with a full stack of arpeggiators and sequencers running.
open-source hardware and firmware.
12-hp.
easy firmware updates through midi (sysex).
current consumption: +12v: 60ma ; -12v: 2ma.

download the quickstart guide here.