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Encyclopedia of Microtonal Music Theory

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ennealimmal

[Joe Monzo]

A musical tuning temperament family, discovered and named by Gene Ward Smith.

. . . . . . . . .
[data from Gene Ward Smith Yahoo tuning-math message 11967 (Thu Apr 14, 2005 11:47 am)]

family name: ennealimmal, 72&99
period: 1/9 octave, or 133 & 1/3 cents. Very nearly 27/25 ratio
generator: 36/35 ratio or 21/20 ratio
5-limit
name: ennealimmal
comma: ennealimma = 2 / (27/25)^9 = 2,3,5-monzo |1 -27 18> = ~0.861826202 cents
prime mapping: [<9 15 22|, <0 -2 -3|] period, generator
5-limit generator: 250/243 ratio
poptimal generators: 68/1665-edo, 37/906-edo
TOP period: 133.3322145 cents
TOP generator: 49.0061286 cents
TOP mapping: <1199.98993 1901.97096 2786.29033| cents
MOS cardinalities: 18, 27, 45, 72, 99, 171, 270, 441, 612, 1503, 1665
7-limit
name: ennealimmal
wedgie: <<18 27 18 1 -22 -34||
prime mapping: [<9 15 22 26|, <0 -2 -3 -2|] period, generator
poptimal generator: 43/1053-edo, 61/1494-edo, 49/1200-edo
(from the last, exactly 49 cents is a poptimal generator.)
TOP period: 133.3373752 cents
TOP generator: 49.0239856 cents
TOP mapping: <1200.03638 1902.01266 2786.35030 3368.72378| cents
TM basis: {2401/2400, 4375/4374} ratios
MOS cardinalities: 18, 27, 45, 72, 99, 171, 270, 441, 612, 1053
. . . . . . . . .
[Joe Monzo]

Tonescape lattices of ennealimmal-45

Below are screen-shots of Tonescape lattices of ennealimmal-45 tuning, with the syntonic-comma and ennealimma as the two unison-vectors:

ennealimmal-45_3-5-space_open-rectangular.gif ennealimmal-45_3-5-space_open-triangular.gif ennealimmal-45_3-5-space_closed_equatorial-view.gif ennealimmal-45_3-5-space_closed_equatorial-view.gif ennealimmal-45_3-5-space_closed_north-pole-view-star.gif
. . . . . . . . .

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