17/15

Interval information

Ratio	17/15
Factorization	3-1 × 5-1 × 17
Monzo	[0 -1 -1 0 0 0 1⟩
Size in cents	216.6867¢
Name	septendecimal whole tone
Color name	17og3, sogu 3rd
FJS name	[math]\displaystyle{ \text{d3}^{17}_{5} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	7.99435
Weil norm (log2 max(n, d))	8.17493
Wilson norm (sopfr(nd))	25
[sound info]
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In 17-limit just intonation, 17/15 is the septendecimal whole tone measuring about 216.7¢. It is the mediant between 9/8 and 8/7, as it is (9+8)/(8+7). It is found in the harmonic series between the 17th and 15th overtones. 11edo's second degree, measuring approximately 218.2¢, is close in size to 17/15 -- indeed, the 11edo system has excellent approximations of the 15th and 17th harmonics, and so this harmonic function is plausible in 11edo.

√2/(17/15) is three cents flat of a 5/4 major third, and this or 17/15 itself can be used for a tuning for wizard and its various relatives (lizard, gizzard, etc.).

See also

• 30/17 – its octave complement
• 20/17 – its fourth complement
• Gallery of just intervals