User:CompactStar/Ordinal interval notation

Lefts and rights notation is a notation for just intonation.

Intervals are represented by a conventional interval classification with lefts and rights added. To get the classification for an interval, multiply the interval classes of the prime harmonics which it factors into, which are predefined as follows:

Prime harmonic	Interval
2/1	P8	perfect octave	C
3/2	P5	perfect 5th	G
5/4	M3	major 3rd	E
7/4	m7	minor 7th	Bb
11/8	P4	perfect 4th	F
13/8	m6	minor 6th	Ab
17/16	m2	minor 2nd	Db
19/16	m3	minor 3rd	Eb
23/16	A4	augmented 4th	F#
29/16	m7	minor 7th	Bb
31/16	P8	perfect octave	C
37/32	M2	major 2nd	D
41/32	M3	major 3rd	E
43/32	P4	perfect 4th	F
47/32	P5	perfect 5th	G
53/32	M6	major 6th	A
61/32	M7	major 7th	B