Interval size measure: Difference between revisions

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| [[43edo|43]]
| [[43edo|43]]
| PRIME
| PRIME
| Proposed by Joseph Sauveur, as 7 heptaméride units ([http://tonalsoft.com/enc/m/meride.aspx source])
| Proposed by [[Joseph Sauveur]], as 7 heptaméride units<ref>[http://tonalsoft.com/enc/m/meride.aspx Tonalsoft | ''Méride / 43-ed2 / 43-edo / 43-ET / 43-tone equal-temperament'']</ref>
|-
|-
| [[Holdrian comma]]
| [[Holdrian comma]]
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| [[72edo|72]]
| [[72edo|72]]
| 2<sup>3</sup> × 3<sup>2</sup>
| 2<sup>3</sup> × 3<sup>2</sup>
|
| See dedicated page.
|-
|-
| [[Farab]]
| [[Farab]]
| [[144edo|144]]
| [[144edo|144]]
| 2<sup>4</sup> × 3<sup>2</sup>
| 2<sup>4</sup> × 3<sup>2</sup>
| 1/12 of [[12edo]] semitone; Proposed by al-Farabi in 10th century ([http://www.huygens-fokker.org/docs/measures.html source])
| 1/12 of [[12edo]] semitone; Proposed by al-Farabi in 10th century<ref>[http://tonalsoft.com/enc/f/farab.aspx Tonalsoft | ''Farab''].</ref>
|-
|-
| [[Mem]]
| [[Mem]]
| [[205edo|205]]
| [[205edo|205]]
| 5 × 41
| 5 × 41
| Unit used by [http://musictheory.zentral.zone/huntsystem1.html H-Pi Instruments]
| Unit used by H-Pi Instruments<ref>[http://musictheory.zentral.zone/huntsystem1.html H-Pi Instruments | Hunt Theoretical System]</ref><ref>[http://tonalsoft.com/enc/m/mem.aspx Tonalsoft | ''Mem, 205-edo'']</ref>
|-
|-
| [[Tredek]]
| [[Tredek]]
| [[270edo|270]]
| [[270edo|270]]
| 2 × 3<sup>3</sup> × 5
| 2 × 3<sup>3</sup> × 5
|
| Proposed by [[Joe Monzo]] (2013)<ref>[http://tonalsoft.com/enc/t/tredek.aspx Tonalsoft | ''Tredek, 270-edo'']</ref>.
|-
|-
| [[Savart]]*
| [[Savart]]*
| [[300edo|300]]
| [[300edo|300]]
| 2<sup>2</sup> × 3 × 5<sup>2</sup>
| 2<sup>2</sup> × 3 × 5<sup>2</sup>
| Alexander Wood's definition of the Savart (''[https://books.google.com.au/books?id=NWZ8CgAAQBAJ&lpg=PT50&vq=savart&pg=PT51 The Physics of Music]'', 1944), compatible with [[12edo]] system
| [[Alexander Wood]]'s definition of the Savart<ref>''[https://books.google.com.au/books?id=NWZ8CgAAQBAJ&lpg=PT50&vq=savart&pg=PT51 The Physics of Music]'', Alexander Wood, 1944.</ref>, compatible with [[12edo]] system
|-
|-
| [[Heptaméride]]/[[Eptaméride]]/[[Savart]]*
| [[Heptaméride]] / [[eptaméride]] / [[savart]]*
| [[301edo|301]]
| [[301edo|301]]
| 7 × 43
| 7 × 43
| 301 ≃ 1,000 * log<sub>10</sub>2; 1/7 of Méride unit; Proposed by Joseph Sauveur ([http://www.tonalsoft.com/enc/e/equal-temperament.aspx 1701]), advocated by Félix Savart
| 301 ≃ 1,000 × log<sub>10</sub>2; 1/7 of Méride unit; proposed by Joseph Sauveur (1701), advocated by [[Félix Savart]]<ref>[http://tonalsoft.com/enc/h/heptameride.aspx Tonalsoft | ''Heptaméride'']</ref>.
|-
|-
| [[Gene]]
| [[Gene]]
| [[311edo|311]]
| [[311edo|311]]
| PRIME
| PRIME
|
| Proposed by Joe Monzo (2007)<ref>[http://tonalsoft.com/enc/g/gene.aspx Tonalsoft | ''Gene, 311-edo'']</ref>.
|-
|-
| [[Dröbisch Angle]]
| [[Dröbisch Angle]]
| [[360edo|360]]
| [[360edo|360]]
| 2<sup>3</sup> × 3<sup>2</sup> × 5
| 2<sup>3</sup> × 3<sup>2</sup> × 5
|
| Proposed as ''angle'' by [[Moritz Dröbisch]] in the 19th century, later by [[Andrew Pikler]] as the current name in ''Logarithmic Frequency Systems'' (1966).
|-
|-
| [[Squb]]
| [[Squb]]
| [[494edo|494]]
| [[494edo|494]]
| 2 × 13 × 19
| 2 × 13 × 19
|
| {{Citation needed}}
|-
|-
| Great [[Iring]]/[[Centitone]]
| Great [[iring]] / [[centitone]]
| [[500edo|500]]
| [[500edo|500]]
| 2<sup>2</sup> × 5<sup>3</sup>
| 2<sup>2</sup> × 5<sup>3</sup>
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| [[Iring]]/[[Centitone]]
| [[Iring]] / [[centitone]]
| [[600edo|600]]
| [[600edo|600]]
| 2<sup>3</sup> × 3 × 5<sup>2</sup>
| 2<sup>3</sup> × 3 × 5<sup>2</sup>
| [[Relative cent]] of [[6edo]] ([[12edo]] tone); Proposed by Widogast Iring (1898), later by Joseph Yasser as a "centitone" (1932). ([http://www.tonalsoft.com/enc/c/centitone.aspx source])
| [[Relative cent]] of [[6edo]] ([[12edo]] tone); Proposed by [[Widogast Iring]] (1898), later by [[Joseph Yasser]] as a "centitone" (1932)<ref>[http://www.tonalsoft.com/enc/c/centitone.aspx Tonalsoft | ''Centitone, iring'']</ref>.
|-
|-
| [[Skisma]]
| [[Skisma]]
| [[612edo|612]]
| [[612edo|612]]
| 2<sup>2</sup> × 3<sup>2</sup> × 17
| 2<sup>2</sup> × 3<sup>2</sup> × 17
| Edo representation of [[Sagittal notation|Sagittal]]'s Ultra (Herculean) precision level JI notation (58eda), where it is known as an "ultrina"
| Edo representation of [[Sagittal notation|Sagittal]]'s Ultra (Herculean) precision level JI notation (58eda), where it is known as an "ultrina"<ref>[http://tonalsoft.com/enc/s/sk.aspx Tonalsoft | ''Sk, 612-edo'']</ref>.
|-
|-
| [[Delfi]]
| [[Delfi]]
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|
|
|-
|-
| Small [[Iring]]/[[Centitone]]
| Small [[iring]] / [[centitone]]
| [[700edo|700]]
| [[700edo|700]]
| 2<sup>2</sup> × 5<sup>2</sup> x 7
| 2<sup>2</sup> × 5<sup>2</sup> x 7
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| [[730edo|730]]
| [[730edo|730]]
| 2 × 5 × 73
| 2 × 5 × 73
| Proposed by Wesley S.B. Woolhouse in [https://archive.org/details/essayonmusicali00woolgoog/page/n34/mode/2up ''Essay on musical intervals''] (1835)
| Proposed by [[Wesley S.B. Woolhouse]] (1835)<ref>[https://archive.org/details/essayonmusicali00woolgoog/page/n34/mode/2up ''Essay on musical intervals, harmonics, and the temperament of the musical scale, &c'']</ref>
|-
|-
| [[millioctave]] (moct)
| [[millioctave]] (moct)
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| [[Wikipedia: Metric prefix|SI-prefix]] division of octave
| [[Wikipedia: Metric prefix|SI-prefix]] division of octave
|-
|-
| [[cent]] (¢)
| [[Cent]] (¢)
| 1200
| 1200
| 2<sup>4</sup> × 3 × 5<sup>2</sup>
| 2<sup>4</sup> × 3 × 5<sup>2</sup>
| 1/100 of [[12edo]] semitone
| See the dedicated page.
|-
|-
| greater muon
| Greater muon
| [[1224edo|1224]]
| [[1224edo|1224]]
| 2<sup>3</sup> × 3<sup>2</sup> × 17
| 2<sup>3</sup> × 3<sup>2</sup> × 17
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| triangular cent
| Triangular cent
| [[1260edo|1260]]
| [[1260edo|1260]]
| 2<sup>2</sup> × 3<sup>2</sup> × 5 × 7
| 2<sup>2</sup> × 3<sup>2</sup> × 5 × 7
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| '''[[pion]]'''
| [[Pion]]
| [[1272edo|1272]]
| [[1272edo|1272]]
| 2<sup>3</sup> × 3 × 53
| 2<sup>3</sup> × 3 × 53
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| pound
| Pound
| [[1344edo|1344]]
| [[1344edo|1344]]
| 2<sup>6</sup> × 3 × 7
| 2<sup>6</sup> × 3 × 7
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| neutron
| Neutron
| [[1392edo|1392]]
| [[1392edo|1392]]
| 2<sup>4</sup> × 3 × 29
| 2<sup>4</sup> × 3 × 29
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| lesser muon
| Lesser muon
| [[1428edo|1428]]
| [[1428edo|1428]]
| 2<sup>2</sup> × 3 × 7 × 17
| 2<sup>2</sup> × 3 × 7 × 17
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| deciFarab
| Decifarab
| [[1440edo|1440]]
| [[1440edo|1440]]
| 2<sup>5</sup> × 3<sup>2</sup> × 5
| 2<sup>5</sup> × 3<sup>2</sup> × 5
| 1/10 of [[Farab]] unit{{Citation needed}}
| 1/10 of [[Farab]] unit{{Citation needed}}
|-
|-
| quadratic cent
| Quadratic cent
| [[1452edo|1452]]
| [[1452edo|1452]]
| 2<sup>2</sup> × 3 × 11<sup>2</sup>
| 2<sup>2</sup> × 3 × 11<sup>2</sup>
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| ksion
| Ksion
| [[1476edo|1476]]
| [[1476edo|1476]]
| 2<sup>2</sup> × 3<sup>2</sup> × 41
| 2<sup>2</sup> × 3<sup>2</sup> × 41
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| cubic cent
| Cubic cent
| [[1500edo|1500]]
| [[1500edo|1500]]
| 2<sup>2</sup> × 3 × 5<sup>3</sup>
| 2<sup>2</sup> × 3 × 5<sup>3</sup>
| {{Citation needed}}
| {{Citation needed}}
|-
|-
| '''[[7mu]]''' or '''[[Heptamu]]'''
| [[7mu]] or [[Heptamu]]
| [[1536edo|1536]]
| [[1536edo|1536]]
| 2<sup>9</sup> × 3
| 2<sup>9</sup> × 3
| (7th MIDI unit), seventh MIDI-resolution unit, 1/128 (1/(2<sup>7</sup>)) of [[12ED2]] semitone ([http://tonalsoft.com/enc/number/7mu.aspx source])
| Seventh MIDI-resolution unit, 1/128 (1/(2<sup>7</sup>)) of [[12edo]] semitone<ref>[http://tonalsoft.com/enc/number/7mu.aspx Tonalsoft | ''7mu / heptamu'']</ref>
|-
|-
| rhoon
| Rhoon
| [[1560edo|1560]]
| [[1560edo|1560]]
| 2<sup>3</sup> × 3 × 5 × 13
| 2<sup>3</sup> × 3 × 5 × 13
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| From Sanskrit ''śatam'': hundred; [[Relative cent]] of Armodue 16edo Theory{{Citation needed}}
| From Sanskrit ''śatam'': hundred; [[Relative cent]] of Armodue 16edo Theory{{Citation needed}}
|-
|-
| tile
| Tile
| [[1632edo|1632]]
| [[1632edo|1632]]
| 2<sup>5</sup> × 3 × 17
| 2<sup>5</sup> × 3 × 17
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| [[1\1700_octave|1700]]
| [[1\1700_octave|1700]]
| 2<sup>2</sup> × 5<sup>2</sup> × 17
| 2<sup>2</sup> × 5<sup>2</sup> × 17
| [[Relative cent]] of [[17edo]]; proposed by [[Margo Schulter]] ([http://www.huygens-fokker.org/docs/measures.html source]) and [[George Secor]] ([[Relative cent|source]])
| [[Relative cent]] of [[17edo]]; proposed by [[Margo Schulter]] (2002) and [[George Secor]]
|-
|-
| [[Harmos]]
| [[Harmos]]
| [[1728edo|1728]]
| [[1728edo|1728]]
| 2<sup>6</sup> × 3<sup>3</sup>
| 2<sup>6</sup> × 3<sup>3</sup>
| 1728 = 12<sup>3</sup>; 1/144 of [[12edo]] semitone; Proposed by Paul Beaver ([http://www.tonalsoft.com/enc/e/equal-temperament.aspx source])
| 1728 = 12<sup>3</sup>; 1/144 of [[12edo]] semitone; Proposed by [[Paul Beaver]]<ref>[http://tonalsoft.com/enc/e/equal-temperament.aspx Tonalsoft | ''Equal temperaments'']</ref>
|-
|-
| Hind śat / Indian cent
| Hind śat / Indian cent
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| [[2460edo|2460]]
| [[2460edo|2460]]
| 2<sup>2</sup> × 3 × 5 × 41
| 2<sup>2</sup> × 3 × 5 × 41
| Abbreviation of "schismina", edo representation of [[Sagittal notation|Sagittal]]'s Extreme (Olympian) precision level JI notation (233eda)
| Abbreviation of "schismina", edo representation of [[Sagittal notation|Sagittal]]'s Extreme (Olympian) precision level JI notation (233eda)<ref>[http://tonalsoft.com/enc/m/mina.aspx Tonalsoft | ''Mina'']</ref>
|-
|-
| Centidiesis
| Centidiesis
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| [[8539edo|8539]]
| [[8539edo|8539]]
| PRIME
| PRIME
| Provides good approximations for 41-limit primes except 37 ([http://www.tonalsoft.com/enc/t/tina.aspx source]); named by [[Dave Keenan]] and [[George Secor]]; edo representation of [[Sagittal notation|Sagittal]]'s Insane (Magrathean) precision level JI notation (809eda)
| Provides good approximations for 41-limit primes except 37; named by [[Dave Keenan]] and [[George Secor]]; edo representation of [[Sagittal notation|Sagittal]]'s Insane (Magrathean) precision level JI notation (809eda)<ref>[http://tonalsoft.com/enc/t/tina.aspx Tonalsoft | ''Tina'']</ref>.
|-
|-
| [[Purdal]]
| [[Purdal]]
| [[9900edo|9900]]
| [[9900edo|9900]]
| 2<sup>2</sup> × 3<sup>2</sup> × 5<sup>2</sup> × 11
| 2<sup>2</sup> × 3<sup>2</sup> × 5<sup>2</sup> × 11
| [[Relative cent]] of [[99edo]]; Suggested by [[Osmiorisbendi]], advocated by [[Tútim Dennsuul Wafiil]]  
| [[Relative cent]] of [[99edo]]; Suggested by [[Osmiorisbendi]], advocated by [[Tútim Dennsuul Wafiil]].
|-
|-
| [[Türk sent]] / [[Turkish cent]]
| [[Türk sent]] / [[Turkish cent]]
| [[10600edo|10600]]
| [[10600edo|10600]]
| 2<sup>3</sup> × 5<sup>2</sup> × 53
| 2<sup>3</sup> × 5<sup>2</sup> × 53
| [[Relative cent]] of [[106edo]], 1/200 of [[53edo]]; invented by [http://www.tonalsoft.com/enc/t/turk-sent.aspx M. Ekrem Karadeniz] (1965), influenced by  [https://core.ac.uk/download/pdf/76124322.pdf Abdülkadir Töre]
| [[Relative cent]] of [[106edo]], 1/200 of [[53edo]]; invented by [[M. Ekrem Karadeniz]] (1965), influenced by [[Abdülkadir Töre]]<ref>[http://www.tonalsoft.com/enc/t/turk-sent.aspx Tonalsoft | ''Türk-sent'']</ref><ref>''79-Tone Tuning & Theory for Turkish Maqam Music'', Ozan Yarman. </ref>
|-
|-
| [[Prima]]
| [[Prima]]
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| [[16808edo|16808]]
| [[16808edo|16808]]
| 2<sup>3</sup> × 11 × 191
| 2<sup>3</sup> × 11 × 191
|
| See the dedicated page.
|-
|-
| [[Jot]]
| [[Jot]]
| [[30103edo|30103]]
| [[30103edo|30103]]
| PRIME
| PRIME
| 30103 ≃ 100,000 * log<sub>10</sub>2; Proposed by [http://www.tonalsoft.com/enc/j/jot.aspx Augustus de Morgan]([http://tonalsoft.com/enc/e/equal-temperament.aspx 1864])
| 30103 ≃ 100,000 × log<sub>10</sub>2; Proposed by [[Augustus de Morgan]] (1864)<ref>[http://www.tonalsoft.com/enc/j/jot.aspx Tonalsoft | ''Jot'']</ref>
|-
|-
| [[Imp]]
| [[Imp]]
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| [[46032edo|46032]]
| [[46032edo|46032]]
| 2<sup>4</sup> × 3 × 7 × 137
| 2<sup>4</sup> × 3 × 7 × 137
|
| Proposed by [[Gene Ward Smith]] (2005)<ref>[http://tonalsoft.com/enc/f/flu.aspx Tonalsoft | ''Flu'']</ref>
|-
|-
| [[MIDI Tuning Standard unit]]
| [[MIDI Tuning Standard unit]] (14mu)
| [[196608edo|196608]]
| [[196608edo|196608]]
| 2<sup>16</sup> × 3
| 2<sup>16</sup> × 3
| 14mu (14th MIDI unit), fourteenth MIDI-resolution unit, 1/16384 (1/(2<sup>14</sup>)) of [[12edo]] semitone
| Fourteenth MIDI-resolution unit, 1/16384 (1/(2<sup>14</sup>)) of [[12edo]] semitone
|-
|-
| [[Mean free path]]
| [[Mean free path]]
| ~216,608,494
| ~216,608,494
| 2×41×2641567
| 2 × 41 × 2641567
|
|
|}
|}