Equal temperaments

the musical tuning system where the ratio between successive notes is constant

musical interval unit

The millioctave (moct) is a unit of measurement for musical intervals. As is expected from the prefix milli-, a millioctave is defined as 1/1000 of an octave. From this it follows that one millioctave is equal to the ratio 21/1000, the 1000th root of 2, or approximately 1.0006934 ().

one comma in 53-TET

musical tuning system that divides an octave into 12 evenly-spaced frequencies on a logarithmic scale

thumb|1/100 heptaméride (jot), 1/10 heptaméride (decameride), 1 heptamérides, 10 heptamérides, 100 heptamérides, 1,000 heptamérides (decade).

musical tuning system with 19 pitches equally-spaced on a logarithmic scale

musical tuning system with 53 pitches equally-spaced on a logarithmic scale

musical tuning system with 31 pitches equally-spaced on a logarithmic scale