171edo: Difference between revisions

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== Theory ==
== Theory ==
171edo is a remarkable edo which serves as a [[microtemperament]] for the [[7-limit]], 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]].
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]]).
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| 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
| −0.093
| 0.401
| 0.401
| 5.71
| 5.71
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| 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
| −0.149
| 0.386
| 0.386
| 5.50
| 5.50
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| 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
| −0.138
| 0.358
| 0.358
| 5.11
| 5.11
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| 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
| −0.001
| 0.220
| 0.220
| 3.13
| 3.13
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| 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
| −0.013
| 0.202
| 0.202
| 2.88
| 2.88
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| [[Enneadecal]]
| [[Enneadecal]]
|}
|}
<nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if it is distinct
<nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct


== Scales ==
== Scales ==
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=== 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) &ndash; rendered by [[レケム]] (2022)
* [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) &ndash; [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]
* "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 ==