A131071 12-note scale in Hertz (rounded to integers).

261, 275, 293, 309, 330, 348, 366, 391, 412, 440, 464, 495, 521

Offset: 1

Author

Hans Isdahl, Sep 24 2007

Keywords

• nonn

Links

• Wikipedia, Pythagorean tuning.
• Index entries for sequences related to music.

Crossrefs

Cf. A131062 for the corresponding C major scale. [M. F. Hasler, Oct 07 2011]

Cf. A214832.

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