Interval size measure: Difference between revisions
m "http://www.h-pi.com/theory/measurement3.html" is now a dead link; changed external link at text "H-Pi Instruments" (also changed from "H-pi Instruments") to "http://musictheory.zentral.zone/huntsystem1.html". |
Replaced large paragraph in "Logarithmic" section with a table displaying same information. Maintained proposed "backslash notation" in "Power of interval:" column, but I would have preferred to use forward slashes (see "Interval based on:" column). |
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===Fine=== | ===Fine=== | ||
The [[cent]] (¢), [[1200edo|1\1200 octave]], is the classic measure for intervals when more precision than 12edo is required. Some people object to it on the grounds that it is too (obviously) closely related to 12 equal. | The [[cent]] (¢), [[1200edo|1\1200 octave]], is the classic measure for intervals when more precision than 12edo is required. Some people object to it on the grounds that it is too (obviously) closely related to 12 equal. | ||
The following table demonstrates a list of measures derived from the logarithmic division of a interval (e.g. octave, twelfth): | |||
{| class="wikitable sortable" | |||
|+List of Fine Measures (Logarithmic) | |||
!Unit name (symbol): | |||
!Interval based on: | |||
!Power of interval: | |||
!Significance | |||
|- | |||
|[[Armodue_theory|Eka]] | |||
|2/1 (octave) | |||
|[[16edo|1\16]] | |||
| | |||
|- | |||
|[[Normal_diesis|Normal diesis]] | |||
|2/1 (octave) | |||
|[[31edo|1\31]] | |||
| | |||
|- | |||
|[[Méride]] | |||
|2/1 (octave) | |||
|[[43edo|1\43]] | |||
| | |||
|- | |||
|[[Holdrian_comma|Holdrian comma]] | |||
|2/1 (octave) | |||
|[[53edo|1\53]] | |||
| | |||
|- | |||
|[[Morion]] | |||
|2/1 (octave) | |||
|[[72edo|1\72]] | |||
| | |||
|- | |||
|[[Farab]] | |||
|2/1 (octave) | |||
|[[144edo|1\144]] | |||
| | |||
|- | |||
|[[Mem]] | |||
|2/1 (octave) | |||
|[[205edo|1\205]] | |||
|Unit used by [http://musictheory.zentral.zone/huntsystem1.html H-Pi Instruments] | |||
|- | |||
|[[Tredek]] | |||
|2/1 (octave) | |||
|[[270edo|1\270]] | |||
| | |||
|- | |||
|[[Eptaméride]] or [[Savart]] | |||
|2/1 (octave) | |||
|[[301edo|1\301]] | |||
| | |||
|- | |||
|[[Gene]] | |||
|2/1 (octave) | |||
|[[311edo|1\311]] | |||
| | |||
|- | |||
|[[Dröbisch_Angle|Dröbisch Angle]] | |||
|2/1 (octave) | |||
|[[360edo|1\360]] | |||
| | |||
|- | |||
|[[Squb]] | |||
|2/1 (octave) | |||
|[[494edo|1\494]] | |||
| | |||
|- | |||
|[[Iring]] | |||
|2/1 (octave) | |||
|[[600edo|1\600]] | |||
| | |||
|- | |||
|[[Skisma]] | |||
|2/1 (octave) | |||
|[[612edo|1\612]] | |||
| | |||
|- | |||
|[[Delfi]] | |||
|2/1 (octave) | |||
|[[665edo|1\665]] | |||
| | |||
|- | |||
|[[Woolhouse]] | |||
|2/1 (octave) | |||
|[[730edo|1\730]] | |||
| | |||
|- | |||
|[[millioctave]] (mO) | |||
|2/1 (octave) | |||
|[[1000edo|1\1000]] | |||
|"Metric" / SI division of octave | |||
|- | |||
|[[cent]] (¢) | |||
|2/1 (octave) | |||
|1\1200 | |||
|1/100 of 12-ED2 semitone | |||
|- | |||
|greater muon | |||
|2/1 (octave) | |||
|[[1224edo|1\1224]] | |||
| | |||
|- | |||
|triangular cent | |||
|2/1 (octave) | |||
|[[1260edo|1\1260]] | |||
| | |||
|- | |||
|pion | |||
|2/1 (octave) | |||
|[[1272edo|1\1272]] | |||
| | |||
|- | |||
|pound | |||
|2/1 (octave) | |||
|[[1344edo|1\1344]] | |||
| | |||
|- | |||
|neutron | |||
|2/1 (octave) | |||
|[[1392edo|1\1392]] | |||
| | |||
|- | |||
|lesser muon | |||
|2/1 (octave) | |||
|[[1428edo|1\1428]] | |||
| | |||
|- | |||
|deciFarab | |||
|2/1 (octave) | |||
|[[1440edo|1\1440]] | |||
|1/10 of Farab | |||
|- | |||
|quadratic cent | |||
|2/1 (octave) | |||
|[[1452edo|1\1452]] | |||
| | |||
|- | |||
|ksion | |||
|2/1 (octave) | |||
|[[1476edo|1\1476]] | |||
| | |||
|- | |||
|cubic cent | |||
|2/1 (octave) | |||
|[[1500edo|1\1500]] | |||
| | |||
|- | |||
|7mu | |||
|2/1 (octave) | |||
|[[1536edo|1\1536]] | |||
| | |||
|- | |||
|rhoon | |||
|2/1 (octave) | |||
|[[1560edo|1\1560]] | |||
| | |||
|- | |||
|tile | |||
|2/1 (octave) | |||
|[[1632edo|1\1632]] | |||
| | |||
|- | |||
|[[Iota]] | |||
|2/1 (octave) | |||
|[[1\1700_octave|1\1700]] | |||
| | |||
|- | |||
|[[Harmos]] | |||
|2/1 (octave) | |||
|[[1728edo|1\1728]] | |||
| | |||
|- | |||
|[[Mina]] | |||
|2/1 (octave) | |||
|[[2460edo|1\2460]] | |||
| | |||
|- | |||
|[[Tina]] | |||
|2/1 (octave) | |||
|[[8539edo|1\8539]] | |||
| | |||
|- | |||
|[[Purdal]] | |||
|2/1 (octave) | |||
|[[9900edo|1\9900]] | |||
| | |||
|- | |||
|[[Türk_sent|Türk sent]] | |||
|2/1 (octave) | |||
|[[10600edo|1\10600]] | |||
| | |||
|- | |||
|[[Prima]] | |||
|2/1 (octave) | |||
|[[12276edo|1\12276]] | |||
| | |||
|- | |||
|[[Jinn]] | |||
|2/1 (octave) | |||
|[[16808edo|1\16808]] | |||
| | |||
|- | |||
|[[Jot]] | |||
|2/1 (octave) | |||
|[[30103edo|1\30103]] | |||
| | |||
|- | |||
|[[Imp]] | |||
|2/1 (octave) | |||
|[[31920edo|1\31920]] | |||
| | |||
|- | |||
|[[Flu]] | |||
|2/1 (octave) | |||
|[[46032edo|1\46032]] | |||
| | |||
|- | |||
|[[MIDI_Tuning_Standard_unit|MIDI Tuning Standard unit]] | |||
|2/1 (octave) | |||
|[[196608edo|1\196608]] | |||
|fourteenth MIDI-resolution unit, 2<sup>14</sup> = 1/16384 of [[12edo|12ED]]2 semitone | |||
|- | |||
|[[Hekt]] | |||
|3/1 (twelfth) | |||
|1\1300 | |||
|1/100 of 13-ED3 (Bohlen-Pierce) scale step | |||
|- | |||
|[[Grad]] | |||
|531441/524288 (Pythagorean comma) | |||
|1\12 | |||
| | |||
|- | |||
|[[Tuning unit]] | |||
|531441/524288 (Pythagorean comma) | |||
|1\720 | |||
| | |||
|} | |||
See [http://www.huygens-fokker.org/docs/measures.html Logarithmic Interval Measures] | See [http://www.huygens-fokker.org/docs/measures.html Logarithmic Interval Measures] | ||