37ED4

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37ED4 is an equal tuning which divides the 4/1 double octave into 37 steps of approximately 64.865¢. As an ED4 system, it is equivalent to taking every other tone of 37edo. All the intervals of 37ED4 are thus the same as or an octave away from a corresponding interval in 37edo.

65cET is a slightly stretched version of 37ED4, in which the 37th degree is 5¢ sharp of 4/1.

Approximation of harmonics in 37ed4
Harmonic 2 3 4 5 6 7 8 9 10 11
Error absolute (¢) +32.4 -20.9 +0.0 +2.9 +11.6 +4.1 +32.4 +23.1 -29.6 +0.0
relative (%) +50 -32 +0 +4 +18 +6 +50 +36 -46 +0
Steps
(reduced)
19
(19)
29
(29)
37
(0)
43
(6)
48
(11)
52
(15)
56
(19)
59
(22)
61
(24)
64
(27)

Music

Happy Birthday by Todd Harrop