457edo: Difference between revisions
+music |
m changed EDO intro to ED intro |
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{{Infobox ET}} | {{Infobox ET}} | ||
{{ | {{ED intro}} | ||
== Theory == | == Theory == | ||
457edo is [[consistent]] to the [[7-odd-limit]], but the error of [[harmonic]] [[3/1|3]] is quite large. | 457edo is [[consistent]] to the [[7-odd-limit]], but the error of [[harmonic]] [[3/1|3]] is quite large. As an equal temperament, it [[tempering out|tempers out]] [[19683/19600]] and [[65625/65536]] in the [[7-limit]]; [[540/539]], [[8019/8000]], and 43923/43904 in the [[11-limit]]. | ||
=== Odd harmonics === | === Odd harmonics === | ||
Line 9: | Line 9: | ||
=== Subsets and supersets === | === Subsets and supersets === | ||
457edo is the 88th [[prime edo]]. | 457edo is the 88th [[prime edo]]. | ||
== Regular temperament properties == | == Regular temperament properties == | ||
{| class="wikitable center-4 center-5 center-6" | {| class="wikitable center-4 center-5 center-6" | ||
|- | |||
! rowspan="2" | [[Subgroup]] | ! rowspan="2" | [[Subgroup]] | ||
! rowspan="2" | [[Comma list | ! rowspan="2" | [[Comma list]] | ||
! rowspan="2" | [[Mapping]] | ! rowspan="2" | [[Mapping]] | ||
! rowspan="2" | Optimal<br>8ve | ! rowspan="2" | Optimal<br />8ve stretch (¢) | ||
! colspan="2" | Tuning | ! colspan="2" | Tuning error | ||
|- | |- | ||
! [[TE error|Absolute]] (¢) | ! [[TE error|Absolute]] (¢) | ||
! [[TE simple badness|Relative]] (%) | ! [[TE simple badness|Relative]] (%) | ||
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| {{monzo| -724 457 }} | | {{monzo| -724 457 }} | ||
| {{mapping| 457 724 }} | | {{mapping| 457 724 }} | ||
| 0.2716 | | +0.2716 | ||
| 0.2716 | | 0.2716 | ||
| 10.34 | | 10.34 | ||
Line 32: | Line 33: | ||
| {{monzo| -36 11 8 }}, {{monzo| -5 31 -19 }} | | {{monzo| -36 11 8 }}, {{monzo| -5 31 -19 }} | ||
| {{mapping| 457 724 1061 }} | | {{mapping| 457 724 1061 }} | ||
| 0.2267 | | +0.2267 | ||
| 0.2307 | | 0.2307 | ||
| 8.79 | | 8.79 | ||
Line 39: | Line 40: | ||
| 19683/19600, 65625/65536, 7381125/7340032 | | 19683/19600, 65625/65536, 7381125/7340032 | ||
| {{mapping| 457 724 1061 1283 }} | | {{mapping| 457 724 1061 1283 }} | ||
| 0.1609 | | +0.1609 | ||
| 0.2300 | | 0.2300 | ||
| 8.76 | | 8.76 | ||
Line 46: | Line 47: | ||
| 540/539, 8019/8000, 19683/19600, 43923/43904 | | 540/539, 8019/8000, 19683/19600, 43923/43904 | ||
| {{mapping| 457 724 1061 1283 1581 }} | | {{mapping| 457 724 1061 1283 1581 }} | ||
| 0.1227 | | +0.1227 | ||
| 0.2194 | | 0.2194 | ||
| 8.36 | | 8.36 | ||
Line 53: | Line 54: | ||
| 540/539, 1716/1715, 4225/4224, 41067/40960, 43940/43923 | | 540/539, 1716/1715, 4225/4224, 41067/40960, 43940/43923 | ||
| {{mapping| 457 724 1061 1283 1581 1691 }} | | {{mapping| 457 724 1061 1283 1581 1691 }} | ||
| 0.1142 | | +0.1142 | ||
| 0.2012 | | 0.2012 | ||
| 7.66 | | 7.66 | ||
Line 60: | Line 61: | ||
| 936/935, 1089/1088, 1275/1274, 1575/1573, 2601/2600, 4225/4224 | | 936/935, 1089/1088, 1275/1274, 1575/1573, 2601/2600, 4225/4224 | ||
| {{mapping| 457 724 1061 1283 1581 1691 1868 }} | | {{mapping| 457 724 1061 1283 1581 1691 1868 }} | ||
| 0.0952 | | +0.0952 | ||
| 0.1920 | | 0.1920 | ||
| 7.31 | | 7.31 | ||
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=== Rank-2 temperaments === | === Rank-2 temperaments === | ||
{| class="wikitable center-all left-5" | {| class="wikitable center-all left-5" | ||
|+Table of rank-2 temperaments by generator | |+ style="font-size: 105%;" | Table of rank-2 temperaments by generator | ||
! Periods<br>per 8ve | |- | ||
! Periods<br />per 8ve | |||
! Generator* | ! Generator* | ||
! Cents* | ! Cents* | ||
! Associated<br> | ! Associated<br />ratio* | ||
! Temperaments | ! Temperaments | ||
|- | |- | ||
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| [[Tritriple]] | | [[Tritriple]] | ||
|} | |} | ||
<nowiki>* | <nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct | ||
== Music == | == Music == | ||
; [[Francium]] | ; [[Francium]] | ||
* "Less and Less" from ''Take Advantage'' (2024) – [https://open.spotify.com/track/5w3K1Q6VhCkUPMXmuh5pVt Spotify] | [https://francium223.bandcamp.com/track/less-and-less Bandcamp] | [https://www.youtube.com/watch?v=y4MGhHE20b4 YouTube] | * "Less and Less" from ''Take Advantage'' (2024) – [https://open.spotify.com/track/5w3K1Q6VhCkUPMXmuh5pVt Spotify] | [https://francium223.bandcamp.com/track/less-and-less Bandcamp] | [https://www.youtube.com/watch?v=y4MGhHE20b4 YouTube] | ||
* "Porcelain Stoneware" from ''Scoop'' (2024) – [https://open.spotify.com/track/055lRdMBKr37MU8HQqlvus Spotify] | [https://francium223.bandcamp.com/track/porcelain-stoneware Bandcamp] | [https://www.youtube.com/watch?v=bzycN6PYMQQ YouTube] | |||
[[Category:Listen]] |