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Ross W. Duffin, Just Intonation in Renaissance Theory and Practice |
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Interval
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Example
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Ratio
|
Cents
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Consecutive
|
Simultaneous
|
|
minimal semitone
|
C0 - C#-2
|
25:24
|
70.67
|
|
|
|
minor semitone
|
C0 - C#-1
|
135:128
|
92.18
|
|
|
|
major semitone
|
C0 - Db+1
|
16:15
|
111.73
|
|
|
|
maximum semitone
|
C0 - Db+2
|
27:25
|
133.24
|
|
|
|
minor tone
|
C0 - D-1
|
10:9
|
182.40
|
|
|
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major tone
|
C0 - D0
|
9:8
|
203.91
|
|
|
|
minor third
|
C0 - Eb+1
|
6:5
|
315.64
|
|
|
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major third
|
C0 - E-1
|
5:4
|
386.31
|
|
|
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perfect fourth
|
C0 - F0
|
4:3
|
498.04
|
|
|
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augmented fourth
|
C0 - F#-1
|
45:32
|
590.22
|
|
|
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diminished fifth
|
C0 - Gb+1
|
64:45
|
609.78
|
|
|
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perfect fifth
|
C0 - G0
|
3:2
|
701.96
|
|
|
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minor sixth
|
C0 - Ab+1
|
8:5
|
813.69
|
|
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major sixth
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C0 - A-1
|
5:3
|
884.36
|
|
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minor seventh (lesser)
|
C0 - Bb0
|
16:9
|
996.09
|
|
|
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minor seventh (greater)
|
C0 - Bb+1
|
9:5
|
1017.60
|
|
|
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major seventh
|
C0 - B-1
|
15:8
|
1088.27
|
|
|
|
octave
|
C0 - C0
|
2:1
|
1200.00
|
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