27208edt: Difference between revisions
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27208edt provides an ''extremely good approximation | 27208edt provides an ''extremely'' good approximation to the [[No-twos subgroup temperaments|no-twos]] [[7-limit]], with the [[5/1|5th harmonic]] tuned 0.045% sharp (approximately 1/2231 of a step), and the [[7/1|7th harmonic]] tuned 0.0073% sharp (approximately 1/13733 of a step). Despite the very good tuning of prime harmonics 3, 5 and 7, 27208edt misses the octave, [[2/1]], by approximately a third of a step, making it incomparable with its related [[edo]]s, [[17166edo]] and [[17167edo]]. Though the 8th harmonic is tuned only 1% flat, tripling the tuning to [[51499edo]] increases the error several hundredfold on the 3rd, 5th, and 7th harmonics; even so, this makes 51499edo a relatively good EDO for 7-limit, with errors comparable to those of [[18355edo]]. | ||
27208edt also has good approximations to the 8th, 13th and 23rd harmonics, making it an excellent tuning in the 3.5.7.8.13.23 subgroup. | |||
=== Prime harmonics === | === Prime harmonics === | ||
{{Harmonics in equal|27208|3|1| | {{Harmonics in equal|27208|3|1|}} | ||