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Encyclopedia of Microtonal Music Theory

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Lumma impropriety

[Manuel Op de Coul, Scala file "tips.par"; Scala command "Help|Tips|Show all"]

For improper scales, Lumma's impropriety factor is defined as the portion of the spectrum which is more than singly covered. For scales which are proper or strictly proper, there are no overlapping intervals and the impropriety is therefore always zero.

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