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[[File:4ado scale.wav|thumb]] | [[File:4ado scale.wav|thumb]] | ||
'''4ado''' ([[ADO|arithmetic division of the octave]]), or ''' | '''4ado''' ([[ADO|arithmetic division of the octave]]), or '''4odo''' ([[otonal division]] of the octave), divides the octave into four parts of 1/4 each. As a scale it may be known as [[Harmonic mode|mode 4 of the harmonic series]] or the [[Overtone_scale#Over-n_scales|Over-4]] scale. Because 4 is a power of 2, 4ado corresponds to the 4th to 8th harmonics octave-reduced. The notes of 4ado create a harmonic seventh chord. | ||
== Intervals == | == Intervals == | ||
Revision as of 04:21, 1 April 2023
4ado (arithmetic division of the octave), or 4odo (otonal division of the octave), divides the octave into four parts of 1/4 each. As a scale it may be known as mode 4 of the harmonic series or the Over-4 scale. Because 4 is a power of 2, 4ado corresponds to the 4th to 8th harmonics octave-reduced. The notes of 4ado create a harmonic seventh chord.
Intervals
| # | Cents | Ratio | Decimal | Interval name | Audio |
|---|---|---|---|---|---|
| 0 | 0 | 1/1 | 1.0000 | perfect unison | |
| 1 | 386.3 | 5/4 | 1.2500 | just major third | |
| 2 | 702.0 | 3/2 | 1.5000 | just perfect fifth | |
| 3 | 968.8 | 7/4 | 1.7050 | harmonic seventh | |
| 4 | 1200.0 | 2/1 | 2.0000 | perfect octave |