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Microintervals Notation

Conventions

Scales

OM offers all scales approximations from 1/2 to 1/8 tone, as well as 1/10, 1/12, 1/14 and 1/16 tone approximations.

Accidental Types

All accidentals are ascending, that is, based on naturals and sharps .

Microintervals and Tonality

Microtonal scales are not available in a tonal context.

To cancel the choice of a tonality, press Shift + t. The original “atonal” configuration is be restored.

Accidentals Charts

Note

Scales that don’t comprise semitones - 1/3, 1/5, 1/7 and their derived scales can be tricky, for they sometimes have different types of accidentals.

Notation Principles

Naturals are replaced by plain vertical lines - for instance : .

Incrementations of sharps are indicated by two vertical lines - for instance :.

the number of vertical lines indicates incrementations of 1, 2 or 3 quarter tones - for instance .

three different arrowheads indicate incrementations of a 1/16th , 1/8th and 3/16th tones of naturals and sharps.

incrementations of 1 or 2 thirds of tone are shown by the number of additional horizontal lines - for instance .

they combine arrowheads with horizontal lines.

they use additional combination of horizontal lines.

1/2 Tone and Elementary Multiples

Accidentals of the half tone scale and its multiples.

Accidentals of the half tone scale and its multiples.Zoom

1/3 Tone and Elementary Multiples

Accidentals of the third tone scale and its multiples.

Accidentals of the third tone scale and its multiples.Zoom

1/5 and 1/10 Tone

Accidentals of the fifth and tenth tone scales.

Accidentals of the fifth and tenth tone scales.Zoom

1/7 and 1/14 Tone

Accidentals of the seventh and fourteenth tone scales.

Accidentals of the seventh and fourteenth tone scales.Zoom

References :

Contents :

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