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A131071
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12-note scale in Hertz (without decimals).
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1
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261, 275, 293, 309, 330, 348, 366, 391, 412, 440, 464, 495, 521
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Wikipedia, Pythagorean tuning.
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FORMULA
| The scale involves 9/8 and 256/243 as fractions and the start is A = 440 Hz.
The initial term (rounded frequency of the C) is calculated as 16/27 * 440 Hz = 260.74 Hz, cf. the Wikipedia page on Pythagorean tuning for the ratios of the frequencies. - M. F. Hasler, Oct 07 2011
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CROSSREFS
| Cf. A131062 for the corresponding C major scale. [From M. F. Hasler, Oct 07 2011]
Sequence in context: A200578 A200808 A045026 * A131062 A079506 A028527
Adjacent sequences: A131068 A131069 A131070 * A131072 A131073 A131074
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KEYWORD
| nonn
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AUTHOR
| Hans Isdahl (hansi(AT)nordtroms.net), Sep 24 2007
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