CVC

Haken Audio 10HP
MIDI I/O UTILITY

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Control Voltage Converter for EaganMatrix instruments. A single unit produces 16 high-resolution CV outputs (four per voice, four voices) via 16-bit DACs on -9.9V to +10V 3.5 mm jacks, fed by i2c from a Continuum, ContinuuMini, EaganMatrix Module/Micro or Osmose.

Patch Ideas · 4

Four-voice translation
Connect a Continuum or EaganMatrix source to the CVC · route W for gate, X for pitch (V/oct), Y for timbre and Z for pressure · patch the four outputs of voice 1 to a single analog voice to hear one finger cleanly.
Walkthrough
  1. In the EaganMatrix editor set Voices = 4 and enable standard W/X/Y/Z assignments
  2. Patch the source's i2c out to the CVC i2c IN (3.5 mm TRS)
  3. Patch X1 to your VCO V/oct, W1 to an envelope or VCA gate
  4. Patch Y1 to filter cutoff, Z1 to VCA CV for dynamics
  5. Play one finger on the Continuum and confirm only voice 1's LED flashes
Signal out One expressive monophonic voice that tracks pitch, timbre and pressure with Continuum-grade resolution.
Listen for A single clear note that follows finger position and pressure; attacks are percussive, not smoothed like a MIDI-CV converter.
▸ Show diagram
Patch diagramPatch diagram with 6 modules and 6 connections. Modules: CVC, VCO, Filter, VCA, Continuum, Filter (In) -> VCA. Signals: 1 audio, 3 cv, 1 pitch, 1 gate.CVCVCOFilterVCAContinuumFilter (In) -> VCAVoices: 4W=Gate X=Pitch Y=Timbre Z=Pressure: i2c IN 3.5mmcvX11v/octW1gateY1cvZ1cvV/Oct1v/octOutaudioCutoffcvGategateCVcvi2ccvInaudioaudiocvpitchgate
Pressure-fanned filter voice
Use voice 1 only: X1 drives pitch, Y1 opens the filter for timbre, and Z1 fans out to both VCA depth and an extra filter resonance CV so harder pressing blooms the voice.
Walkthrough
  1. Assign Voices = 1 (or just use voice 1 outputs) in the editor
  2. Patch X1 to VCO V/oct and W1 to the envelope trigger
  3. Patch Y1 to filter cutoff CV input A
  4. Multiple Z1 to VCA CV and filter resonance CV
  5. Play softly then press harder to hear the bloom
Signal out Monophonic voice whose brightness and dynamics scale with finger pressure.
Listen for Quiet attacks stay dark and thin; leaning into the Continuum opens the filter and swells the VCA simultaneously.
▸ Show diagram
Patch diagramPatch diagram with 8 modules and 8 connections. Signals: 2 audio, 4 cv, 1 pitch, 1 gate.CVCVCOFilterVCAMultContinuumEnvelopeFilter (In) -> VCAVoices: 1 activei2c IN 3.5mmcvX11v/octW1gateY1cvZ1audioV/Oct1v/octOutaudioCutoffcvRes CVcvCVcvInaudioOut1cvOut2cvi2ccvTriggateInaudioaudiocvpitchgate
Eight-voice stack with dual CVCs
Chain two CVCs over i2c · CVC A carries voices 1-4 for a polyphonic pad, CVC B carries voices 5-8 for a bass split · same EaganMatrix performance fans out across the rack for 32 CVs total.
Walkthrough
  1. In the editor set Voices = 8 and split the keyboard: voices 1-4 high, 5-8 low
  2. Patch the Continuum i2c to CVC A (3.5 mm TRS)
  3. Daisy-chain CVC A to CVC B via i2c
  4. Patch X1-4/W1-4 from CVC A to four pad VCOs and gates
  5. Patch X1-4/W1-4 from CVC B to bass VCOs on a second voice card
Signal out Eight simultaneously expressive voices: four pad, four bass, all from one Continuum.
Listen for Chords in the upper half of the Continuum bloom as an expressive pad while low-hand notes trigger a separate bass engine.
▸ Show diagram
Patch diagramPatch diagram with 9 modules and 6 connections. Signals: 2 cv, 2 pitch, 2 gate.CVC ACVC BPad VCO 1-4Bass VCO 1-4Continuum.4.4.4.4Voices: 8 (split)i2c INcvi2ccvX1..X41v/octW1..W4gatei2c INcvX1..X41v/octW1..W4gatei2ccvV/Oct1v/octTriggateV/Oct1v/octTriggatecvpitchgate
Dynamic Base Voice patch-switcher
Configure two output subsets in the editor · subset A = voice 1 outputs to lead VCO, subset B = voice 2 outputs to bass VCO · switching base voice during play hands the same finger gesture to a different analog patch.
Walkthrough
  1. In the EaganMatrix editor enable Dynamic Base Voice
  2. Define subset A using W1/X1/Y1/Z1, subset B using W2/X2/Y2/Z2
  3. Patch subset A into a lead voice (X1 -> VCO A V/oct, W1 -> env A)
  4. Patch subset B into a bass voice (X2 -> VCO B V/oct, W2 -> env B)
  5. Use a Continuum preset action (recirculator/macro) to switch base voice while playing
Signal out One active monophonic voice at a time, reassignable mid-performance between lead and bass patches.
Listen for A phrase that starts as a singing lead then cuts to a punchy bass tone on the same keys when you flip the base voice.
▸ Show diagram
Patch diagramPatch diagram with 8 modules and 7 connections. Signals: 3 cv, 2 pitch, 2 gate.CVCLead VCOLead EnvLead VCABass VCOBass EnvBass VCAContinuumDynamic Base Voice: ONSubset A: W1 X1 Y1 Z1Subset B: W2 X2 Y2 Z2i2c INcvX11v/octW1gateZ1cvX21v/octW2gateZ2cvV/Oct1v/octTriggateCVcvV/Oct1v/octTriggateCVcvi2ccvcvpitchgate

Behaviors

Four-voice mapping single CVC attached to an EaganMatrix source

One unit maps the performance stream to four voices, each exposing four CVs (W/X/Y/Z) — 16 outputs total.

Dual CVC expansion two units chained via i2c

A paired setup expands to eight voices and 32 CVs using the same i2c protocol, no extra config in the module.

Dynamic Base Voice subset of CVC outputs enabled in the EaganMatrix editor

Only selected outputs are active, letting one performance switch between several monophonic patches on the fly.

16-bit expressive path fast Continuum finger motion

16-bit DACs and i2c transport preserve percussive attacks and wide pitch bends that standard MIDI-CV converters smooth away.

MIDI Thru passthrough MIDI fed into the i2c DIN5 input

MIDI arriving on the DIN5 i2c jack is echoed out the TRS Type A MIDI Thru for chaining to other gear.

Voice activity LEDs incoming per-voice data

Each voice LED flashes with its voice's activity, making routing visible at a glance.

Controls

I/O

IN · 2

  • i2c IN (3.5 mm TRS) digital
    Primary i2c input for Slim Continuum, ContinuuMini, EaganMatrix Module and EaganMatrix Micro.
  • i2c IN (DIN5) digital
    Alternate i2c connection carried over unused pins of a MIDI cable, for older Thick Continuums and the Expressive E Osmose.

OUT · 7

  • W1-4 -9.9V to +10V GATE
    Four configurable CV outputs normally assigned to gate per voice. 16-bit DAC.
  • X1-4 -9.9V to +10V CV
    Four configurable CV outputs normally assigned to pitch (V/oct) per voice. 16-bit DAC, ~8-octave bend range preserved.
  • Y1-4 -9.9V to +10V CV
    Four configurable CV outputs normally assigned to timbre per voice. 16-bit DAC.
  • Z1-4 -9.9V to +10V CV
    Four configurable CV outputs normally assigned to pressure per voice. 16-bit DAC.
  • MIDI THRU (3.5 mm TRS Type A) digital
    TRS Type A MIDI Thru that passes along MIDI received at the i2c DIN5 input.
  • VOICE ACTIVITY LEDs indicator
    One LED per voice; flashes when performance data is present on that voice.
  • POWER LED indicator
    Blue power indicator.