Odim and udim: Difference between revisions
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Odim and udim are a pair of inversely related [[chord]]s of [[7-limit]] just intonation, 1-6/5-7/5 and 1-7/6-7/5 in any position and voicing. They may also be called the major and minor Huygens triads. | Odim and udim are a pair of inversely related [[chord]]s of [[7-limit]] just intonation, [[5:6:7|1-6/5-7/5]] and [[30:35:42|1-7/6-7/5]] in any position and voicing. They may also be called the major and minor Huygens triads. | ||
They belong to a rank three [[subgroup]] of the 7-limit, 2.5/3.7/3, and in some ways are analogous to the major and minor [[5-limit]] triads, which also belong to a rank-three subgroup of the 7-limit. | They belong to a rank three [[subgroup]] of the [[7-limit]], 2.5/3.7/3, and in some ways are analogous to the major and minor [[5-limit]] triads, which also belong to a rank-three subgroup of the 7-limit. | ||
Analogous to [[zarlino]], the 5-limit "JI diatonic", is the [[tritriadic scale]] 6/5-7/5-10/7-42/25-12/7-49/25-2, and analogous to [[meantone]] is [[Subgroup temperaments#Starlingtet|starlingtet]]. | Analogous to [[zarlino]], the 5-limit "JI diatonic", is the [[tritriadic scale]] 6/5-7/5-10/7-42/25-12/7-49/25-2, and analogous to [[meantone]] is [[Subgroup temperaments#Starlingtet|starlingtet]]. | ||