Chain of fifths: Difference between revisions
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* [https://en.xen.wiki/w/Generalized_Pythagorean_tuning#Chain_of_fifths_.2F_fourths Generalized Pythagorean Tuning] | |||
[[Category:Pitch space]] | [[Category:Pitch space]] | ||
Revision as of 02:09, 7 January 2024
The chain of fifths is a tool to show and measure relationships between chords or key signatures, applicable to all tuning systems generated by an octave and a fifth. The concept dates back to at least the 13th century [1], and was applied in meantone, well temperaments and 12edo to help analysing chord progressions and modulations.
For edos in particular, this becomes a circle of fifths. If the fifth is a number of steps that is co-prime to the edo number itself, all intervals will be visited when traversing the edo by fifth-steps. See for example the intervals in 7edo: (0, 4, 1, 5, 2, 6, 3)\7. Other edos have more than one circle of fifths, 10edo for example has two of them: (0, 6, 2, 8, 4)\10 and (1, 7, 3, 9, 5)\10. 15edo has three distinct circles of fifths: (0, 9, 3, 12, 6)\15, (1, 10, 4, 13, 7)\15, and (2, 11, 5, 14, 8)\15.
See also
- ↑ Schulter, Margo “Pythagorean Tuning and Medieval Polyphony"