171edo: Difference between revisions
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== Theory == | == Theory == | ||
171edo is a remarkable edo which serves as a [[ | 171edo is a remarkable edo which serves as a [[7-limit]] [[microtemperament]], approximating the [[9-odd-limit]] [[tonality diamond]] within about 2/5 of a cent. The excellence of its 7-limit approximations is good enough to make it the eleventh [[zeta integral edo]] but not enough to make it a [[zeta gap edo|zeta gap]]. | ||
Remarkable 5-limit commas 171et [[tempering out|tempers out]] are 32805/32768 ([[schisma]]), {{monzo| 1 -27 18 }} ([[ennealimma]]), {{monzo| -14 -19 19 }} ([[enneadeca]]), and {{monzo| -29 -11 20 }} ([[gammic comma]]), and remarkable 7-limit commas 171et tempers out are 2401/2400 ([[breedsma]]), 4375/4374 ([[ragisma]]), 65625/65536 ([[horwell comma]]), 250047/250000 ([[landscape comma]]), 420175/419904 ([[wizma]]), and 703125/702464 ([[meter]]). So 171et [[support]]s a number of 7-limit rank-2 temperaments: [[pontiac]], [[sesquiquartififths]], [[term]], [[ennealimmal]], [[tertiaseptal]], [[supermajor]], [[enneadecal]], [[neptune]], [[mitonic]], and [[mutt]]. It notably provides the [[optimal patent val]] for the rank-3 [[horwell]] temperament, and is also an excellent tuning for the 5-limit [[helmholtz|schismatic microtemperament]], tempering out 32805/32768, and the no-fives temperament tempering out {{monzo| -59 39 0 -1 }} ([[nanisma]]). | Remarkable 5-limit commas 171et [[tempering out|tempers out]] are 32805/32768 ([[schisma]]), {{monzo| 1 -27 18 }} ([[ennealimma]]), {{monzo| -14 -19 19 }} ([[enneadeca]]), and {{monzo| -29 -11 20 }} ([[gammic comma]]), and remarkable 7-limit commas 171et tempers out are 2401/2400 ([[breedsma]]), 4375/4374 ([[ragisma]]), 65625/65536 ([[horwell comma]]), 250047/250000 ([[landscape comma]]), 420175/419904 ([[wizma]]), and 703125/702464 ([[meter]]). So 171et [[support]]s a number of 7-limit rank-2 temperaments: [[pontiac]], [[sesquiquartififths]], [[term]], [[ennealimmal]], [[tertiaseptal]], [[supermajor]], [[enneadecal]], [[neptune]], [[mitonic]], and [[mutt]]. It notably provides the [[optimal patent val]] for the rank-3 [[horwell]] temperament, and is also an excellent tuning for the 5-limit [[helmholtz|schismatic microtemperament]], tempering out 32805/32768, and the no-fives temperament tempering out {{monzo| -59 39 0 -1 }} ([[nanisma]]). | ||
| Line 57: | Line 57: | ||
| 243/242, 441/440, 4375/4356, 16384/16335 | | 243/242, 441/440, 4375/4356, 16384/16335 | ||
| {{mapping| 171 271 397 480 592 }} | | {{mapping| 171 271 397 480 592 }} | ||
| | | −0.093 | ||
| 0.401 | | 0.401 | ||
| 5.71 | | 5.71 | ||
| Line 64: | Line 64: | ||
| 243/242, 364/363, 441/440, 625/624, 2200/2197 | | 243/242, 364/363, 441/440, 625/624, 2200/2197 | ||
| {{mapping| 171 271 397 480 592 633 }} | | {{mapping| 171 271 397 480 592 633 }} | ||
| | | −0.149 | ||
| 0.386 | | 0.386 | ||
| 5.50 | | 5.50 | ||
| Line 71: | Line 71: | ||
| 243/242, 364/363, 375/374, 441/440, 595/594, 2200/2197 | | 243/242, 364/363, 375/374, 441/440, 595/594, 2200/2197 | ||
| {{mapping| 171 271 397 480 592 633 699 }} | | {{mapping| 171 271 397 480 592 633 699 }} | ||
| | | −0.138 | ||
| 0.358 | | 0.358 | ||
| 5.11 | | 5.11 | ||
| Line 85: | Line 85: | ||
| 625/624, 729/728, 2205/2197, 2401/2400 | | 625/624, 729/728, 2205/2197, 2401/2400 | ||
| {{mapping| 171 271 397 480 633 }} | | {{mapping| 171 271 397 480 633 }} | ||
| | | −0.001 | ||
| 0.220 | | 0.220 | ||
| 3.13 | | 3.13 | ||
| Line 92: | Line 92: | ||
| 625/624, 729/728, 833/832, 1225/1224, 2205/2197 | | 625/624, 729/728, 833/832, 1225/1224, 2205/2197 | ||
| {{mapping| 171 271 397 480 633 699 }} | | {{mapping| 171 271 397 480 633 699 }} | ||
| | | −0.013 | ||
| 0.202 | | 0.202 | ||
| 2.88 | | 2.88 | ||
| Line 258: | Line 258: | ||
| [[Enneadecal]] | | [[Enneadecal]] | ||
|} | |} | ||
<nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if | <nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct | ||
== Scales == | == Scales == | ||
| Line 267: | Line 267: | ||
=== Modern renderings === | === Modern renderings === | ||
; {{W|Johann Sebastian Bach}} | ; {{W|Johann Sebastian Bach}} | ||
* [https://www.youtube.com/watch?v=7IKpuEqHTyk "Prelude" from ''Prelude and Fugue in C major, No. 1'', BWV 846, from ''The Well-Tempered Clavier, Book I''] (1722) | * [https://www.youtube.com/watch?v=7IKpuEqHTyk "Prelude" from ''Prelude and Fugue in C major, No. 1'', BWV 846, from ''The Well-Tempered Clavier, Book I''] (1722) – rendered by [[レケム]] (2022) | ||
=== 21st century === | === 21st century === | ||
; [[birdshite stalactite]] | ; [[birdshite stalactite]] | ||
* "it's probably gout" from ''clagworks / it's probably gout'' (2024) | * "it's probably gout" from ''clagworks / it's probably gout'' (2024) – [https://open.spotify.com/track/26bfjsdZ8quDTwAkGY5kQF Spotify] | [https://birdshitestalactite.bandcamp.com/track/its-probably-gout Bandcamp] | [https://www.youtube.com/watch?v=uycaqLtws_w YouTube] | ||
== See also == | == See also == | ||