21edo: Difference between revisions

m -major 2nd in infobox
TallKite (talk | contribs)
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| 1
| 1
| 57.14
| 57.14
| ^1 <br> vv2
| ^1 vv2
| up unison, <br> double-down 2nd
| up unison, <br> dud 2nd
| ^C <br> vvD
| ^C <br> vvD
| C#
| C#
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| 114.29
| 114.29
| ^^1 <br> v2
| ^^1 <br> v2
| double-up unison, <br> down 2nd
| dup unison, <br> down 2nd
| ^^C <br> vD
| ^^C <br> vD
| Db
| Db
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| 228.57
| 228.57
| ^2 <br> vv3
| ^2 <br> vv3
| up 2nd, <br> double-down 3rd
| up 2nd, <br> dud 3rd
| ^D <br> vvE
| ^D <br> vvE
| D#
| D#
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| 285.71
| 285.71
| ^^2 <br> v3
| ^^2 <br> v3
| double-up 2nd, <br> down 3rd
| dup 2nd, <br> down 3rd
| ^^D <br> vE
| ^^D <br> vE
| Eb
| Eb
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| 400.00
| 400.00
| ^3 <br> vv4
| ^3 <br> vv4
| up 3rd, <br> double-down 4th
| up 3rd, <br> dud 4th
| ^E <br> vvF
| ^E <br> vvF
| E#/Fb
| E#/Fb
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| 457.14
| 457.14
| ^^3 <br> v4
| ^^3 <br> v4
| double-up 3rd, <br> down 4th
| dup 3rd, <br> down 4th
| ^^E <br> vF
| ^^E <br> vF
| F
| F
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| 571.43
| 571.43
| ^4 <br> vv5
| ^4 <br> vv5
| up 4th, <br> double-down 5th
| up 4th, <br> dud 5th
| ^F <br> vvG
| ^F <br> vvG
| Gb
| Gb
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| 628.57
| 628.57
| ^^4 <br> v5
| ^^4 <br> v5
| double-up 4th, <br> down 5th
| dup 4th, <br> down 5th
| ^^F <br> vG
| ^^F <br> vG
| G
| G
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| 742.86
| 742.86
| ^5 <br> vv6
| ^5 <br> vv6
| up 5th, <br> double-down 6th
| up 5th, <br> dud 6th
| ^G <br> vvA
| ^G <br> vvA
| Hb
| Hb
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| 800.00
| 800.00
| ^^5 <br> v6
| ^^5 <br> v6
| double-up 5th, <br> down 6th
| dup 5th, <br> down 6th
| ^^G <br> vA
| ^^G <br> vA
| H
| H
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| 914.29
| 914.29
| ^6 <br> vv7
| ^6 <br> vv7
| up 6th, <br> double-down 7th
| up 6th, <br> dud 7th
| ^A <br> vvB
| ^A <br> vvB
| A
| A
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| 971.43
| 971.43
| ^^6 <br> v7
| ^^6 <br> v7
| double-up 6th, <br> down 7th
| dup 6th, <br> down 7th
| ^^A <br> vB
| ^^A <br> vB
| A#
| A#
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| 1085.71
| 1085.71
| ^7 <br> vv8
| ^7 <br> vv8
| up 7th, <br> double-down 8ve
| up 7th, <br> dud 8ve
| ^B <br> vvC
| ^B <br> vvC
| B
| B
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| 1142.86
| 1142.86
| ^^7 <br> v8
| ^^7 <br> v8
| double-up 7th, <br> down 8ve
| dup 7th, <br> down 8ve
| ^^B <br> vC
| ^^B <br> vC
| B#/Cb
| B#/Cb
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== Triadic Harmony ==
== Triadic Harmony ==


One interesting feature of 21 EDO is the variety of triads it offers. Five of its intervals--228.6¢, 285.7¢, 342.9¢, 400¢, and 457.1¢ can function categorically as "3rds" for those whose ears are accustomed to diatonic interval categories, representing ultraminor, minor, neutral, major, and ultramajor 3rds respectively (or double-down, down, perfect, up and double-up). One can couple these with 21 EDO's narrow fifth to form five types of triad. In addition to these, there are a few noteworthy "altered" triads that stand out as representations to parts of the harmonic series:
One interesting feature of 21 EDO is the variety of triads it offers. Five of its intervals--228.6¢, 285.7¢, 342.9¢, 400¢, and 457.1¢ can function categorically as "3rds" for those whose ears are accustomed to diatonic interval categories, representing ultraminor, minor, neutral, major, and ultramajor 3rds respectively (or dud, down, perfect, up and dup). One can couple these with 21 EDO's narrow fifth to form five types of triad. In addition to these, there are a few noteworthy "altered" triads that stand out as representations to parts of the harmonic series:


{| class="wikitable center-1 center-2 center-3"
{| class="wikitable center-1 center-2 center-3"
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| C vE vvG
| C vE vvG
| Cv(vv5)
| Cv(vv5)
| C down, double-down five
| C down, dud five
|-
|-
| 0-4-11
| 0-4-11
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| C vvE vG
| C vvE vG
| Cvv(v5)
| Cvv(v5)
| C double-down, down five
| C dud, down five
|-
|-
| 0-6-11
| 0-6-11
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| C ^D ^E F
| C ^D ^E F
| Soft diatonic
| Soft diatonic
| C upperfect up-2
| C up, up-2
|-
|-
| 4, 4, 1
| 4, 4, 1
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| C ^D ^^E F
| C ^D ^^E F
| Intense diatonic
| Intense diatonic
| C up-2 &amp; 6, double-up-3 &amp; 7
| C dup, up-2 &amp; 6
|-
|-
| 5, 3, 1
| 5, 3, 1
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| C ^^D ^^E F
| C ^^D ^^E F
| Archytas chromatic
| Archytas chromatic
| C double-up-2, 3, 6 and 7
| C dup, dup-2
|-
|-
| 5, 2, 2
| 5, 2, 2
| (0)-286-400-(514)
| (0)-286-400-(514)
| C ^D ^E F
| C ^^D ^E F
| Weak chromatic
| Weak chromatic
| C double-up 2 &amp; 6, up-3 &amp; 7
| C up, dup 2 &amp; 6
|-
|-
| 6, 2, 1
| 6, 2, 1
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| C ^<span style="font-size: 90%; vertical-align: super;">3</span>D ^^E F
| C ^<span style="font-size: 90%; vertical-align: super;">3</span>D ^^E F
| Strong enharmonic
| Strong enharmonic
| C triple-up 2 &amp; 6, double-up 3 &amp; 7
| C dup, triple-up 2 &amp; 6
|-
|-
| 7, 1, 1
| 7, 1, 1
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| C ^<span style="font-size: 90%; vertical-align: super;">4</span>D ^^E F
| C ^<span style="font-size: 90%; vertical-align: super;">4</span>D ^^E F
| Pythagorean enharmonic
| Pythagorean enharmonic
| C quadruple-up 2 &amp; 6, double-up 3 &amp; 7
| C dup, quadruple-up 2 &amp; 6
|}
|}
&lowast;These names may not be correct in relating to the ancient Greek tetrachordal genera; please change them if you know better!
&lowast;These names may not be correct in relating to the ancient Greek tetrachordal genera; please change them if you know better!
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*''[http://www.ronsword.com/sounds/21_improv.mp3 Short Clip of 21-edo Acoustic]'' {{dead link}} by [[Ron_Sword|Ron Sword]]
*''[http://www.ronsword.com/sounds/21_improv.mp3 Short Clip of 21-edo Acoustic]'' {{dead link}} by [[Ron_Sword|Ron Sword]]
*''[http://www.ronsword.com/sounds/Ron_Sword_21_Tone_improv.mp3 Open tuning Drone Improvisation in 21-edo]'' {{dead link}} by Ron Sword
*''[http://www.ronsword.com/sounds/Ron_Sword_21_Tone_improv.mp3 Open tuning Drone Improvisation in 21-edo]'' {{dead link}} by Ron Sword
*''[http://www.soundclick.com/bands/page_songInfo.cfm?bandID=122613&songID=933715 Anomalous Readings]'' [http://clones.soonlabel.com/public/micro/gene_ward_smith/Others/Heathwaite/andrewheathwaite+anomalousreadingsin21tet.mp3 (MP3)] by [[Andrew Heathwaite]]
*''[https://www.soundclick.com/bands/page_songInfo.cfm?bandID=122613&songID=933715 Anomalous Readings]'' [http://clones.soonlabel.com/public/micro/gene_ward_smith/Others/Heathwaite/andrewheathwaite+anomalousreadingsin21tet.mp3 (MP3)] by [[Andrew Heathwaite]]
*''[http://micro.soonlabel.com/gene_ward_smith/Others/Winchester/15%20-%2015.%2021%20octave.mp3 Comets Over Flatland 15]'' by [[Randy Winchester]]
*''[http://micro.soonlabel.com/gene_ward_smith/Others/Winchester/15%20-%2015.%2021%20octave.mp3 Comets Over Flatland 15]'' by [[Randy Winchester]]
*''[http://micro.soonlabel.com/gene_ward_smith/Others/Winchester/18%20-%2018.%2021%20octave.mp3 Comets Over Flatland 18]'' by Randy Winchester
*''[http://micro.soonlabel.com/gene_ward_smith/Others/Winchester/18%20-%2018.%2021%20octave.mp3 Comets Over Flatland 18]'' by Randy Winchester
*''[http://www.reverbnation.com/ffffiale/song/17858773-lesatonale-ubriaco L'esatonale ubriaco (the drunk hexatonal), ALIENAMENTE]'' by [[Fabrizio_Fiale|Fabrizio Fulvio Fausto Fiale]]
*''[https://www.reverbnation.com/ffffiale/song/17858773-lesatonale-ubriaco L'esatonale ubriaco (the drunk hexatonal), ALIENAMENTE]'' by [[Fabrizio_Fiale|Fabrizio Fulvio Fausto Fiale]]
*''[[:File:The Angels' Library.mp3|The Angels' Library]]'' by [[Inthar]] in the Sarnathian (23233233) mode of 21edo [[5L 3s]] ([[:File:The Angels' Library Score.pdf|score]])
*''[[:File:The Angels' Library.mp3|The Angels' Library]]'' by [[Inthar]] in the Sarnathian (23233233) mode of 21edo [[5L 3s]] ([[:File:The Angels' Library Score.pdf|score]])