Archytas chords: Difference between revisions
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'''Archytas chords''' are [[essentially tempered chord]]s tempered by the archytas comma, [[64/63]]. | '''Archytas chords''' are [[essentially tempered chord]]s tempered by the archytas comma, [[64/63]]. | ||
The only archytas triad is the following palindromic triad in the [[7-odd-limit]], presented as a stack of two fourths here: | |||
* 1–4/3–7/4 with steps 4/3, 4/3, 8/7. | * 1–4/3–7/4 with steps 4/3, 4/3, 8/7. | ||
Note that one rotation is the sus2 chord (1–8/7–3/2) and the other is the sus4 chord (1–4/3–3/2). In any case, it becomes an essentially just chord in the [[9-odd-limit]]. | |||
Another archytas chord is the following palindromic tetrad that could be called the archy sus4/7 chord: | |||
* 1–4/3–3/2–7/4 with steps 4/3, 8/7, 7/6, 8/7. | * 1–4/3–3/2–7/4 with steps 4/3, 8/7, 7/6, 8/7. | ||
Unlike the triad above, this chord remains essentially tempered in the 9-odd-limit. It makes for an interesting comparison with the [[didymic chords|meantone sus2/6 chord]]. | |||
In the 9-odd-limit, we have an additional palindromic pentad, which also happens to be the [[2L 3s|pentic]] scale [[archy5|Archy[5]]]: | |||
* 1–7/6–4/3–3/2–7/4 with steps 7/6, 8/7, 8/7, 7/6, 8/7. | * 1–7/6–4/3–3/2–7/4 with steps 7/6, 8/7, 8/7, 7/6, 8/7. | ||
[[Category:7-odd-limit chords]] | [[Category:7-odd-limit chords]] | ||
[[Category:9-odd-limit chords]] | |||
[[Category:Essentially tempered chords]] | [[Category:Essentially tempered chords]] | ||
[[Category:Triads]] | [[Category:Triads]] | ||
Revision as of 10:08, 9 October 2024
Archytas chords are essentially tempered chords tempered by the archytas comma, 64/63.
The only archytas triad is the following palindromic triad in the 7-odd-limit, presented as a stack of two fourths here:
- 1–4/3–7/4 with steps 4/3, 4/3, 8/7.
Note that one rotation is the sus2 chord (1–8/7–3/2) and the other is the sus4 chord (1–4/3–3/2). In any case, it becomes an essentially just chord in the 9-odd-limit.
Another archytas chord is the following palindromic tetrad that could be called the archy sus4/7 chord:
- 1–4/3–3/2–7/4 with steps 4/3, 8/7, 7/6, 8/7.
Unlike the triad above, this chord remains essentially tempered in the 9-odd-limit. It makes for an interesting comparison with the meantone sus2/6 chord.
In the 9-odd-limit, we have an additional palindromic pentad, which also happens to be the pentic scale Archy[5]:
- 1–7/6–4/3–3/2–7/4 with steps 7/6, 8/7, 8/7, 7/6, 8/7.