Skip to content
blzr docs

Build: MIDI Voice

A MIDI-controlled monophonic voice. The midi node outputs pitch, gate, and velocity as CV signals. A mul and add node scale the pitch CV to frequency range, driving the oscillator. The gate signal controls an amp node for note on/off dynamics.

Step 1: Add MIDI input

Section titled “Step 1: Add MIDI input”

The midi node converts MIDI messages into pitch, gate, and velocity signals that drive the audio graph.

Nodes added: mv-midi

Step 2: Scale and offset pitch

Section titled “Step 2: Scale and offset pitch”

The mul and add nodes convert the raw pitch CV into the frequency range expected by the oscillator.

Nodes added: mv-mul, mv-add

Connections: 2 new

Step 3: Add the oscillator

Section titled “Step 3: Add the oscillator”

The osc node generates the audible tone. Its frequency is driven by the MIDI pitch signal.

Nodes added: mv-osc

Connections: 1 new

Step 4: Add gate-controlled amp

Section titled “Step 4: Add gate-controlled amp”

The amp node’s gain is driven by the MIDI gate signal — the note sounds only when a key is pressed.

Nodes added: mv-amp

Connections: 2 new

Step 5: Group into a module

Section titled “Step 5: Group into a module”

Select all five nodes and press g. Expose audio-out, and MIDI channel, wave shape, pitch scale, and pitch offset as parameters.

What you just built

Section titled “What you just built”

A reusable MIDI Voice module with 4 exposed parameters and 1 exposed port.

Select it in the Module Library (SPC m) to add one to any patch.

Next steps

Section titled “Next steps”