User:Jdood/4ed6/5
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4 equal divisions of the classic minor third (abbreviated 4ed5/6), also called, is the tuning system that divides the classic minor third (6/5) into 4 equal parts of about 78.91¢ each. Each step represents a frequency ratio of 6/51/4, or the 4th root of 6/5.
Commas
4ed6/5 is tempers out the comma 585640/583443 if you take one step to be an approximation of 22/21.