A131071 - OEIS

A131071

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

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..13.

Wikipedia, Pythagorean tuning.

Index entries for sequences related to music.

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

CROSSREFS

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

Cf. A214832.

Sequence in context: A280325 A045026 A319727 * A345559 A345814 A131062

Adjacent sequences: A131068 A131069 A131070 * A131072 A131073 A131074

KEYWORD

nonn

AUTHOR

Hans Isdahl, Sep 24 2007

STATUS

approved