62edo: Difference between revisions
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It provides the [[optimal patent val]] for [[gallium]], [[semivalentine]] and [[hemimeantone]] temperaments. | It provides the [[optimal patent val]] for [[gallium]], [[semivalentine]] and [[hemimeantone]] temperaments. | ||
Using the 35\62 generator, which leads to the {{val| 62 97 143 173 }} val, 62edo is also an excellent tuning for septimal [[mavila]] temperament; alternatively {{val| 62 97 143 172 }} [[support]]s [[hornbostel]]. | Using the 35\62 generator, which leads to the {{val| 62 97 143 173 }} val, 62edo is also an excellent tuning for [[mavling]], a septimal extension of [[mavila]] temperament; alternatively {{val| 62 97 143 172 }} [[support]]s [[hornbostel]]. | ||
=== Odd harmonics === | === Odd harmonics === | ||
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Since 62 factors into 2 × 31, 62edo does not contain nontrivial subset edos other than [[2edo]] and 31edo. [[186edo]] and [[248edo]] are notable supersets. | Since 62 factors into 2 × 31, 62edo does not contain nontrivial subset edos other than [[2edo]] and 31edo. [[186edo]] and [[248edo]] are notable supersets. | ||
=== | === Miscellany === | ||
62 years is the amount of years in a leap week calendar cycle which corresponds to a year of 365 days 5 hours 48 minutes 23 seconds, meaning it is both a simple cycle for a calendar, and 62 being a multiple of 31 makes it a harmonically useful and playable cycle. The corresponding maximal evenness scales are 15 & 62 and 11 & 62. | 62 years is the amount of years in a leap week calendar cycle which corresponds to a year of 365 days 5 hours 48 minutes 23 seconds, meaning it is both a simple cycle for a calendar, and 62 being a multiple of 31 makes it a harmonically useful and playable cycle. The corresponding maximal evenness scales are 15 & 62 and 11 & 62. | ||
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| 600.00 | | 600.00 | ||
| 17/12, 24/17 | | 17/12, 24/17 | ||
| {{UDnote|step= | | {{UDnote|step=31}} | ||
|- | |- | ||
| 32 | | 32 | ||
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== Notation == | == Notation == | ||
=== | === Stein–Zimmermann–Gould notation === | ||
[[Stein–Zimmermann–Gould notation]] uses sharps and flats combined with quartertone accidentals and arrows: | |||
{{Sharpness-sharp4-szg}} | |||
{{Sharpness- | === Kite's ups and downs notation === | ||
62edo can also be notated with [[Kite's ups and downs notation|Kite's ups and downs]], spoken as up, dup, downsharp, sharp, upsharp etc. and down, dud, upflat etc. Note that dup is equivalent to dudsharp and dud is equivalent to dupflat. | |||
{{Sharpness-sharp4a}} | |||
=== Sagittal notation === | === Sagittal notation === | ||
This notation uses the same sagittal sequence as | This notation uses the same sagittal sequence as edos [[69edo #Sagittal notation|69]] and [[76edo #Sagittal notation|76]], and is a superset of the notation for [[31edo #Sagittal notation|31edo]]. | ||
==== Evo flavor ==== | ==== Evo flavor ==== | ||
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</imagemap> | </imagemap> | ||
In the diagrams above, a sagittal symbol followed by an equals sign (=) means that the following comma is the symbol's [[Sagittal notation#Primary comma|primary comma]] (the comma it ''exactly'' represents in JI), while an approximately equals sign (≈) means it is a secondary comma (a comma it ''approximately'' represents in JI). In both cases the symbol exactly represents the tempered version of the comma in this | In the diagrams above, a sagittal symbol followed by an equals sign (=) means that the following comma is the symbol's [[Sagittal notation #Primary comma|primary comma]] (the comma it ''exactly'' represents in JI), while an approximately equals sign (≈) means it is a secondary comma (a comma it ''approximately'' represents in JI). In both cases the symbol exactly represents the tempered version of the comma in this edo. | ||
=== Armodue notation === | === Armodue notation === | ||
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{| class="wikitable center-all right-3 left-5 mw-collapsible mw-collapsed" | {| class="wikitable center-all right-3 left-5 mw-collapsible mw-collapsed" | ||
|- | |- | ||
! colspan="2" | | ! colspan="2" | # | ||
! Cents | ! Cents | ||
! Armodue notation | ! Armodue notation | ||
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| 1 | | 1 | ||
| | | | ||
|} | |} | ||
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| [[Gallium]] | | [[Gallium]] | ||
|} | |} | ||
<nowiki/>* [[Normal | <nowiki/>* [[Normal forms #Equave-reduced-generator form|Octave-reduced form]], reduced to the first half-octave, and [[normal forms #Minimal-generator form|minimal form]] in parentheses if distinct | ||
== Octave stretch or compression == | |||
62edo tunes most simple [[prime]]s flat. [[Octave stretching|Stretching the octave]] of 62edo by the right amount improves its approximations of [[JI]]. | |||
Some tunings of 62edo which do this include [[ed7|174ed7]] and [[zpi|314zpi]]. | |||
== Instruments == | == Instruments == | ||
* [[Skip fretting system 62 6 11 | === Lumatone === | ||
* [[Lumatone mapping for 62edo]] | |||
=== Skip fretting === | |||
'''[[Skip fretting]] system 62 6 11''' has strings tuned 11\62 apart, while frets are 6\62. | |||
On a 4-string bass, here are your open strings: | |||
0 11 22 33 | |||
A good supraminor 3rd is found on the 2nd string, 1st fret. A supermajor third is found on the open 3rd string. The major 6th can be found on the 4th string, 2nd fret. | |||
5-string bass | |||
51 0 11 22 33 | |||
This adds an interval of a major 7th (minus an 8ve) at the first string, 1st fret. | |||
6-string guitar | |||
0 11 22 33 44 55 | |||
”Major” 020131 | |||
7-string guitar | |||
0 11 22 33 44 55 4 | |||
'''Skip fretting system 62 9 11''' is another 62edo skip fretting system. The 5th is on the 5th string. The major 3rd is on the 2nd string, 1st fret. | |||
{{todo|add illustration|text=Base it off of the diagram from [[User:MisterShafXen/Skip fretting system 62 9 11]]}} | |||
== Music == | |||
; [[Bryan Deister]] | |||
* [https://www.youtube.com/shorts/UerD0NqBbng ''microtonal improvisation in 62edo''] (2025) | |||
* [https://www.youtube.com/watch?v=ujaUA-uwDvE ''62edo improv''] (2025) | |||
* [https://www.youtube.com/watch?v=3_mwEylLEwU&list=WL&index=338 ''62edo prelude''] (2026) | |||