25/21

Interval information

Ratio	25/21
Factorization	3-1 × 52 × 7-1
Monzo	[0 -1 2 -1⟩
Size in cents	301.8465¢
Name	quasi-tempered minor third
Color name	ryy2, ruyoyo 2nd
FJS name	[math]\displaystyle{ \text{A2}^{25}_{7} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	9.03617
Weil norm (log2 max(n, d))	9.28771
Wilson norm (sopfr(nd))	20
[sound info]
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25/21, the quasi-tempered minor third, is the interval between 6/5 and 10/7, and also 7/5 and 5/3. It is 126/125 flat of 6/5, and tempering 126/125 out makes the 1-6/5-10/7 triad into a diminished triad where two minor thirds make up a tritone. It is extremely close to 3 steps of 12edo (300 cents).

See also

• 42/25 - its octave complement
• 63/50 - its fifth complement
• Gallery of just intervals