7edo: Difference between revisions

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[[File:7edo scale.mp3|thumb|A chromatic 7edo scale on C.]]

Equal-heptatonic scales are used in non-western music in African cultures as well as an integral part of ~~early Thai and~~ early Chinese music<ref>[https://www.britannica.com/art/African-music Donald Keith Robotham and Gerhard Kubik, ''African music'', Encyclopedia Britannica]</ref>. Also Georgian music seems to be based on near-equal 7-step scales. It has been speculated in "Indian music:history and structure", that the Indian three-sruti interval of 165 cents is close enough to be mistaken for 171 cents. (or 1.71 semitones).

Equal-heptatonic scales are used in non-western music in African cultures as well as an integral part of early Chinese music<ref>[https://www.britannica.com/art/African-music Donald Keith Robotham and Gerhard Kubik, ''African music'', Encyclopedia Britannica]</ref>. Also Georgian music seems to be based on near-equal 7-step scales. It has been speculated in "Indian music:history and structure", that the Indian three-sruti interval of 165 cents is close enough to be mistaken for 171 cents. (or 1.71 semitones).

7edo can be thought of as the result of stacking seven [[11/9]]'s on top of each other, and then tempering to remove the comma {{monzo| -2 -14 0 0 7 }}. As a temperament, [[William Lynch]] gives it the name "Neutron[7]" just as the whole tone scale of [[12edo]] is known as "Hexe[6]".

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 {{Harmonics in equal|7}}
 [[File:7edo scale.mp3|thumb|A chromatic 7edo scale on C.]]
-Equal-heptatonic scales are used in non-western music in African cultures as well as an integral part of early Thai and early Chinese music<ref>[https://www.britannica.com/art/African-music Donald Keith Robotham and Gerhard Kubik, ''African music'', Encyclopedia Britannica]</ref>. Also Georgian music seems to be based on near-equal 7-step scales. It has been speculated in "Indian music:history and structure", that the Indian three-sruti interval of 165 cents is close enough to be mistaken for 171 cents. (or 1.71 semitones).
+Equal-heptatonic scales are used in non-western music in African cultures as well as an integral part of early Chinese music<ref>[https://www.britannica.com/art/African-music Donald Keith Robotham and Gerhard Kubik, ''African music'', Encyclopedia Britannica]</ref>. Also Georgian music seems to be based on near-equal 7-step scales. It has been speculated in "Indian music:history and structure", that the Indian three-sruti interval of 165 cents is close enough to be mistaken for 171 cents. (or 1.71 semitones).
 edo can be thought of as the result of stacking seven [[11/9]]'s on top of each other, and then tempering to remove the comma {{monzo| -2 -14 0 0 7 }}. As a temperament, [[William Lynch]] gives it the name "Neutron[7]" just as the whole tone scale of [[12edo]] is known as "Hexe[6]".