Microtonal Synthesizer

Scale

Explain ☞EDO: 12

Editor

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Harmony

Scale Information

No info for this scale.

This musical keyboard is built for moment of symmetry scales (mos), which are formed by two step sizes: one large (L) and one small (s).

For example, the diatonic scale is 5L 2s—five large and two small steps.

L and s set how many steps of each size are in the scale.

Ratio sets the ratio between the step sizes.

Mode shifts the starting note of the scale.

EDO (equal divisions of the octave) derives from the step counts and ratio.

With the default 2:1 5L 2s:
(5 × 2) + (2 × 1) = 12
…so the octave must divide into 12.

Each active key of the keyboard displays three values.

The number in bold is edo-steps above the root note (e.g., in 12-edo, how many 12ths of an octave, or semitones).

The glyph on the right indicates the key on a qwerty keyboard to which this note is mapped.

The decimal value on the bottom gives the cents above the root note. One cent is one 1,200th of an octave.

The selected mos is set along the row of keys starting with edo-step 0, key A.

The root note and octaves are marked in orange; other scale degrees are purple.

Chromatic notes are green and azure.

Vertically aligned keys are set so that the higher key on the keyboard plays the higher pitch.