Semitone (interval size measure): Difference between revisions
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A '''semitone''' is one half of a [[tone]]. It is most commonly used as an [[interval size measure|unit of interval size]] with a value equal to [[12edo|1\12]], exactly 100{{cent}}. An exact semitone in [[just intonation]] would be expressed as sqrt([[9/8]]), with a value of about 102{{c}}. | A '''semitone''' is one half of a [[tone]]. It is most commonly used as an [[interval size measure|unit of interval size]] with a value equal to [[12edo|1\12]], exactly 100{{cent}}. An exact semitone in [[just intonation]] would be expressed as sqrt([[9/8]]), with a value of about 102{{c}}. | ||
Besides the unmodified semitone, used as an interval size measure, we also speak of the [[diatonic semitone]], or minor second, and the [[chromatic semitone]], or augmented unison, of a diatonic scale. These are equated ([[enharmonic equivalence|enharmonically equivalent]]) if and only if 12edo is used; for example, they are not the same thing in [[meantone]], where the diatonic semitone is larger than the chromatic semitone, or in [[Pythagorean tuning]], where the diatonic semitone is smaller instead. | |||
== See also == | == See also == | ||
* [[Semitone]] (disambiguation page) | * [[Semitone]] (disambiguation page) | ||
[[Category:Interval size measures]] | |||
[[Category:12edo]] | |||