Gravity family: Difference between revisions
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The '''gravity family''' tempers out [[graviton]], the 5-limit comma 129140163/128000000 = {{monzo| -13 17 -6 }}. The graviton equals (81/80)<sup>4</sup>/(25/24), so that four 81/80 commas come to a classic chromatic semitone. The generator of gravity temperament is a grave fifth of [[40/27]], and hence the name. It is part of the [[syntonic-chromatic equivalence continuum]], whereby (81/80)<sup>''k''</sup> = 25/24. | The '''gravity family''' tempers out [[graviton]], the 5-limit comma 129140163/128000000 = {{monzo| -13 17 -6 }}. The graviton equals (81/80)<sup>4</sup>/(25/24), so that four 81/80 commas come to a classic chromatic semitone. The generator of gravity temperament is a grave fifth of [[40/27]], and hence the name. It is part of the [[syntonic-chromatic equivalence continuum]], whereby (81/80)<sup>''k''</sup> = 25/24. | ||
Full 7-limit extensions of gravity include gravid (58 & 65), marvo (65d & 72), zarvo (65 & 72), and harry (58 & 72), all considered below. A notable subgroup extension is larry. | Full 7-limit extensions of gravity include gravid (58&65), marvo (65d&72), zarvo (65&72), and harry (58&72), all considered below. A notable subgroup extension is larry. | ||
== Gravity == | == Gravity == | ||
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POTE generator: ~40/27 = 683.166 | POTE generator: ~40/27 = 683.166 | ||
Optimal GPV sequence: {{Val list| 7, 37ccee, 44ce, 51ce, 58, 65, 137, 202 }} | |||
Badness: 0.0125 | Badness: 0.0125 | ||
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POTE generator: ~21/20 = 83.167 | POTE generator: ~21/20 = 83.167 | ||
Optimal GPV sequence: {{Val list| 14c, 58, 72, 130, 202 }} | |||
Badness: 0.015867 | Badness: 0.015867 | ||
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POTE generator: ~21/20 = 83.116 | POTE generator: ~21/20 = 83.116 | ||
Optimal GPV sequence: {{Val list| 14cf, 58, 72, 130, 332f, 462ef }} | |||
Badness: 0.013046 | Badness: 0.013046 | ||
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POTE generator: ~21/20 = 83.168 | POTE generator: ~21/20 = 83.168 | ||
Optimal GPV sequence: {{Val list| 14cf, 58, 72, 130, 202g }} | |||
Badness: 0.012657 | Badness: 0.012657 | ||
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POTE generator: ~27/20 = 517.155 | POTE generator: ~27/20 = 517.155 | ||
Optimal GPV sequence: {{Val list| 58, 123, 181ce }} | |||
Badness: 0.047283 | Badness: 0.047283 | ||
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POTE generator: ~27/20 = 516.699 | POTE generator: ~27/20 = 516.699 | ||
Optimal GPV sequence: {{Val list| 65d, 72, 281, 353c, 425bc, 497bc }} | |||
Badness: 0.031685 | Badness: 0.031685 | ||
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POTE generator: ~27/20 = 516.730 | POTE generator: ~27/20 = 516.730 | ||
Optimal GPV sequence: {{Val list| 65d, 72, 137, 209, 281f, 490bcf }} | |||
Badness: 0.026882 | Badness: 0.026882 | ||
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POTE generator: ~27/20 = 516.691 | POTE generator: ~27/20 = 516.691 | ||
Optimal GPV sequence: {{Val list| 65, 72, 353cd }} | |||
Badness: 0.034773 | Badness: 0.034773 | ||
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POTE generator: ~27/20 = 516.667 | POTE generator: ~27/20 = 516.667 | ||
Optimal GPV sequence: {{Val list| 65f, 72 }} | |||
Badness: 0.027584 | Badness: 0.027584 |