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by YetAnotherNick 1692 days ago
Basically at the least you want to create exact frequency ratio of 3/2(major 5th) and 4/3(major 3rd). And also all the power and inverse power which is not achievable in one scale. Instead we substitute 3/2 = 1.5 to 2^(7/12) = 1.4983 and 4/3 = 1.3333 to be 2^(5/12) = 1.3348