Talk:Septimal tritone

	Music portal This article is within the scope of WikiProject Music theory, a collaborative effort to improve the coverage of music theory, theory terminology, music theorists, and musical analysis on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Music theoryWikipedia:WikiProject Music theoryTemplate:WikiProject Music theoryMusic theory articles
???	This article has not yet received a rating on the project's importance scale.

Is it a tritone?[edit]

The "lesser septimal tritone" isn't strictly speaking a tritone at all; it's a diminished fifth. Is this worth mentioning?

72.76.10.36 (talk) 15:45, 14 May 2015 (UTC)[reply]

Technically it depends. In septimal meantone temperament, the lesser septimal tritone is a tritone (i. e., augmented fourth), since it's equal to three narrowed (meantone) whole tones. The diminished fifth is identified with the greater septimal tritone. But in temperaments where the fifth is around 703 cents in size (for instance, 41-equal and 58-equal), three whole tones make a greater septimal tritone, and your statement is correct. In 72 equal temperament, neither septimal tritone is a tritone, since three whole tones are 600 cents and the septimal tritones are one step up or down from that. FiredanceThroughTheNight (talk) 14:59, 26 October 2016 (UTC)[reply]

Incorrect score[edit]

The article says the Greater septimal tritone is a ratio of 10/7. As Fonville says, a raises the note, so the interval shown is narrowed by 36/35. If it were widened by that amount instead, the interval would be correct: 4/3 * 25/24 * 36/35 = 10/7. Burninthruthesky (talk) 15:58, 14 March 2017 (UTC)[reply]

I've also removed the image from Tritone, where the caption correctly describes the "Greater septimal tritone between C and F♯

", in contradiction to the score. Burninthruthesky (talk) 13:47, 15 March 2017 (UTC)[reply]

References

^ Fonville, John. "Ben Johnston's Extended Just Intonation- A Guide for Interpreters", p.121-122, Perspectives of New Music, Vol. 29, No. 2 (Summer, 1991), pp. 106-137.

12 equal temperament the only one that equates both septimal tritones?[edit]

Wouldn't any equal temperament divisible by two, but less than some high numbered equal temperament, be considered as equating both septimal tritones? Or would those not be technically temperaments? Awelotta (talk) 05:57, 11 May 2020 (UTC)[reply]

[Fonville-1] Fonville, John. "Ben Johnston's Extended Just Intonation- A Guide for Interpreters", p.121-122, Perspectives of New Music, Vol. 29, No. 2 (Summer, 1991), pp. 106-137.

[1]