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MidiVolts Desktop - Polyphonic 4 Voice Midi to CV Controller

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The MidiVolts Desktop is a MIDI based 5 octave CV controller. The device contains 4 separate CV outputs with an associated Gate output. These CV outputs are called voices, and are named V0, V1, V2, V3. Each voice operates on the 1 volt per octave standard for eurorack and most hardware synthesizers. The device uses 6 different modes (MONO, DUO, UNISON, POLY3, POLY4, CC) to control each voice in different ways. See below for descriptions of each Mode. The device also contains a Midi to Clock output conversion and further customizations with SysEx midi messaging.

MidiVolts Desktop Power Supply

MidiVolts Desktop requires 9V center positive power supply. Please note that most guitar power supplies are center negative.

MONO: Monophonic Mode

  • Voice 0 (V0) is Pitch CV for the key pressed.
  • Voice 1 (V1) is Velocity of key pressed.
  • Voice 2 (V2) is Aftertouch of key pressed.
  • Voice 3 (V3) is CC1. Default: Mod Wheel.

DUO: Duophonic Mode

  • Voice 0 (V0) is Pitch CV for first key pressed.
  • Voice 1 (V1) is Pitch CV for second key pressed.
  • Voice 2 (V2) is Velocity of first key pressed.
  • Voice 3 (V3) is Velocity of second key pressed.

UNISON: Unison Mode

The purpose of this mode is to aid in the tuning of all connected oscillators.

  • Voice 0 (V0) is Pitch CV for the key pressed.
  • Voice 1 (V1) is Pitch CV for the key pressed.
  • Voice 2 (V2) is Pitch CV for the key pressed.
  • Voice 3 (V3) is Pitch CV for the key pressed.

POLY3: 3 Voice Polyphonic Mode

  • Voice 0 (V0) is Pitch CV for the first key pressed.
  • Voice 1 (V1) is Pitch CV for the second key pressed.
  • Voice 2 (V2) is Pitch CV for the third key pressed.
  • Voice 3 (V3) is CC1. Default: Mod Wheel.

POLY4: 4 Voice Polyphonic Mode

  • Voice 0 (V0) is Pitch CV for the first key pressed.
  • Voice 1 (V1) is Pitch CV for the second key pressed.
  • Voice 2 (V2) is Pitch CV for the third key pressed.
  • Voice 3 (V3) is Pitch CV for the fourth key pressed.

CC: Continuous Control Mode

  • Voice 0 (V0) is Pitch CV for the key pressed.
  • Voice 1 (V1) is CC1. Default: Mod Wheel.
  • Voice 2 (V2) is CC2. Default: 74.
  • Voice 3 (V3) is CC3. Default: 71.

The following may be adjustable with MIDI SysEx messages.

MIDI Channel: 1 - 16

CV Gain, CV Offset: These are adjustable per voice.

Pitch Bend Up, Pitch Bend Down: Specify the number of semitones.

CC1, CC2, CC3: May be assigned 0 - 127 as desired.

LowestMidiNote: Ability to assign lowest note(0V) to specific Midi Note.

Midi Clock Output: May be assigned to operate as Midi Clock or Logic OR Gate for polyphonic modes.

GitHub: https://github.com/spacebraincircuits/midivoltsdesktop

Manual: MidiVolts-OperatorsManual1.4

Etsy: https://www.etsy.com/listing/950322866/midivolts-desktop-polyphonic-4-voice