Module laws 

Vital laws that span several controls: unison spread, LFO tempo rates, pan gains, modulation depth and the amplitude path.

Each law is read from the Vital 1.0.6 open source and restated here. Where the reading joins several facts, the function says so; a probe or a render confirms it before a mapper relies on it.

Structs

UnisonGains

The gains of the centre and the detuned unison voices.

Enums

TempoMode

How a tempo-synced LFO scales its note division.

Constants

MIDI_0_HZ

The note-number frequency law: 8.1757989156 * 2^(note / 12) Hz.

PROVENANCE

The provenance of each law in this module, by function name.

Functions

amp_gain

The voice gain after the amplitude envelope: (envelope * lerp(1, velocity, velocity_track) * voice_amplitude)^2.

lfo_keytrack_rate

The rate of a key-tracked LFO: the note-number law applied to transpose + tune + note.

lfo_tempo_rate

The rate of a tempo-synced LFO.

modulation_delta

The change a modulation route adds to the stored value of its destination: (source - 0.5 * bipolar) * amount * (max - min). It adds before the engine scale of the destination is applied.

pan_gains

The left and right gains of a pan position pan (stored -1 to 1).

power_scale

Vital’s power curve: (e^(p*t) - 1) / (e^p - 1), or t when |p| < 0.01. It maps 0 to 0 and 1 to 1 and bends in between.

unison_gains

The level compensation of unison voices at blend (stored 0 to 1).

unison_offsets

The offsets of voices unison voices as fractions of the outer offset, from lowest to highest.

unison_outer_offset

The offset of the outermost unison voice: detune_range * detune^2 cents, with detune the stored osc_N_unison_detune and detune_range the stored osc_N_detune_range.