Error: Difference between revisions
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'''Error''' is a measurement of the deviation of an [[interval]] from another interval that it is approximating. The {{w|retronym}} ''absolute error'' is sometimes used to contrast it with [[relative error]]. | '''Error''' (also '''mistuning'''<ref>[[Erlich, Paul]]. "[[:File:MiddlePath2015.pdf|A Middle Path: Between Just Intonation and the Equal Temperaments, Part 1]]," ''Xenharmonikôn, An Informal Journal of Experimental Music'' 18 (2006): 159-199.</ref>) is a measurement of the deviation of an [[interval]] from another interval that it is approximating. The {{w|retronym}} ''absolute error'' is sometimes used to contrast it with [[relative error]]. Error is usually signed, with a positive value indicating an overshoot of the target, and a negative value indicating an undershoot. The {{w|absolute value}} of error is called ''unsigned error''. | ||
For example, the [[regular temperament|tempered]] ~3/2 of [[quarter-comma meantone]] is 696. | For example, the [[regular temperament|tempered]] ~3/2 of [[quarter-comma meantone]] is 696.578{{c}}, while a [[JI|just]] 3/2 is 701.955{{c}}, so the error of this ~3/2 is {{nowrap|696.578{{c}} − 701.955{{c}} {{=}} −5.377{{c}}}}. | ||
== See also == | == See also == | ||
* [[Damage]], a measurement of how much an interval deviates from another interval it is approximating: the absolute value of error | * [[Damage]], a measurement of how much an interval deviates from another interval it is approximating: the absolute value of error that has possibly been weighted over complexity | ||
* [[Dave Keenan & Douglas Blumeyer's guide to RTT | * [[Dave Keenan & Douglas Blumeyer's guide to RTT/Tuning fundamentals #Damage, error, and weight]]: for a discussion of error with respect to damage and weight | ||
* [[Error map]] | |||
* [[TE error]] | * [[TE error]] | ||
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