Inversion

Type: Module

Category: Polyphonic utilities

Updated: Sep 02, 2021

Manufacturer: Adroit Synthesis

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A module that performs inversion on chords.

Inversion is a very common practice in musical composition that rearranges the octaves of notes in a chord. This revoicing enables the chord to move up and down in pitch without altering its basic harmonic function.

When there is no inversion the notes are in their standard order - this is called root position.

First inversion raises the bottom note an octave, second inversion the bottom two notes an octave, and so on.

The exact behaviour bepends on how many notes are in the chord. Chords with up to five notes are supported.

This module extends and genralises the idea so that chords can be shifted into nine different positions (including root position).

Use the knob to change the inversion. The range is -4 to +4. 0 (12 o'clock) is root position.

Inversions are generally static but if a control voltage is applied to the CV IN socket it is added to the knob setting, so for instance a 2V signal will put the chord into second inversion if the knob is set at zero. Interesting effects can be achieved using a modulating signal such as an LFO to change the inversion over time.

The LEDs help in understanding what is going on with chords of various sizes.