28edo: Difference between revisions
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== Octave stretch or compression == | == Octave stretch or compression == | ||
'''[[ | '''[[equal tuning |89ed9]]''', a [[octave shrinking|compressed-octaves]] tuning of 28edo, makes 28edo potentially useable as a [[dual-fifth]] tuning. It shares the error equally between 28edo's two perfect fifths. | ||
So, where pure-octaves 28edo has a flat fifth with 16.2{{c}} error and a sharp fifth with 28.6{{c}} error, 89ed9 instead has a flat fifth with 21.4{{c}} error and a sharp fifth with 21.4{{c}} error. | So, where pure-octaves 28edo has a flat fifth with 16.2{{c}} error and a sharp fifth with 28.6{{c}} error, 89ed9 instead has a flat fifth with 21.4{{c}} error and a sharp fifth with 21.4{{c}} error. | ||
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{{Harmonics in equal|28|2|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 28edo (continued)}} | {{Harmonics in equal|28|2|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 28edo (continued)}} | ||
; [[ | ; [[equal tuning|89ed9]] | ||
* Step size: 42.7406{{c}}, octave size: 1196.74{{c}} | * Step size: 42.7406{{c}}, octave size: 1196.74{{c}} | ||
Approximates all no-3s harmonics up to 7 within ''8.2''{{c}}. | Approximates all no-3s harmonics up to 7 within ''8.2''{{c}}. | ||