How Does It Work?#

Poly MIDI-CV is an experimental 8-voice MIDI-to-CV converter that breaks incoming notes out into separate per-voice Pitch, Gate, and Vel outputs, plus a shared Mod output for mod wheel control.

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Quick Overview#

• It provides 8 independent voices.
• Each voice has its own pitch, gate, and velocity output.
• Mod is shared across the whole module.
• It can listen to one MIDI device or All Devices.
• Voice assignment is controlled by Alloc and Steal.

Inputs And Outputs#

Port	Type	What It Does
P1 ... P8	CV	Per-voice pitch outputs in 1V/oct. C4 is 0V, and pitch bend is applied to every active voice.
G1 ... G8	Gate	Per-voice gates. Each output is either 0V or 5V.
V1 ... V8	CV	Per-voice note velocity as unipolar CV (0..5V).
Mod	CV	Shared mod wheel (CC1) output as unipolar CV (0..5V).

Controls Reference#

Control	Values	Default	Behavior
Device	All Devices or one MIDI input	All Devices	Filters incoming MIDI by device.
Channel	0..16	0	0 listens to all channels. 1..16 listen to one channel only.
Bend	1..12 semitones	2	Sets the pitch-bend range for all active voices.
Alloc	RR, OLD, LO, HI	RR	Chooses how new notes are assigned and, when needed, which active voice gets stolen.
Steal	Off, On	On	Allows or blocks note stealing once all 8 voices are busy.

Voice Allocation#

• RR uses round-robin assignment, rotating through the 8 voice slots as notes arrive.
• OLD steals the oldest active voice when all voices are full.
• LO steals the currently lowest note when all voices are full.
• HI steals the currently highest note when all voices are full.
• With Steal off, extra notes are ignored once all 8 voices are in use.

If the same note arrives again from the same device and channel while it is already active, the module retriggers that existing voice instead of creating a duplicate allocation.

Voice Outputs In Practice#

• The panel shows voice activity LEDs above the output rows.
• The P row is pitch, the G row is gate, and the V row is velocity.
• The numbering above each column matches the corresponding voice outputs (1 through 8).

This makes it easy to patch one oscillator, envelope, and VCA chain per voice.

MIDI Controllers And Reset Behavior#

• Pitch bend updates every active voice together.
• Mod is global, so all downstream destinations see the same mod wheel value.
• Changing Device or Channel clears the active voice state, closes all gates, and resets Mod to zero.