Augmented unison: Difference between revisions
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In modern Western [[tonality|tonal]] [[music theory]] an '''augmented unison''' or '''augmented prime'''<ref name=blood/> is the [[interval (music)|interval]] between two notes on the same staff position, or denoted by the same note letter, whose alterations cause them, in ordinary [[equal temperament]], to be one [[semitone]] apart. In other words, it is a [[unison]] where one note has been altered by a half-step, such as B{{music|flat}} and B{{music|natural}} or C{{music|natural}} and C{{music|sharp}}. The interval is often described as a '''chromatic semitone'''.<ref name=grove/> Historically, this interval, like the [[tritone]], is described as being "mi contra fa", and therefore is the "diabolus in musica" (the Devil in music).<ref>Andreas Werckmeister, ''[http://reader.digitale-sammlungen.de/de/fs1/object/display/bsb10527826_00005.html Harmonologia musica, oder kurze Anleitung zur musicalischen Composition]'' (Frankfurt and Leipzig: Theodor Philipp Calvisius, 1702): 6, and ''[http://reader.digitale-sammlungen.de/de/fs1/object/display/bsb10527832_00005.html Musicalische Paradoxal-Discourse, oder allgemeine Vorstellungen]'' (Quedlinburg: Theodor Philipp Calvisius, 1707): 75–76.</ref> In 12-tone [[equal temperament]], it is the [[enharmonic]] equivalent of a diatonic semitone or [[minor second]],<ref name=Porter/> although in other tunings the diatonic semitone is a wider interval. |
In modern Western [[tonality|tonal]] [[music theory]] an '''augmented unison''' or '''augmented prime'''<ref name=blood/> is the [[interval (music)|interval]] between two notes on the same staff position, or denoted by the same note letter, whose alterations cause them, in ordinary [[equal temperament]], to be one [[semitone]] apart. In other words, it is a [[unison]] where one note has been altered by a half-step, such as B{{music|flat}} and B{{music|natural}} or C{{music|natural}} and C{{music|sharp}}. The interval is often described as a '''chromatic semitone'''.<ref name=grove/> Historically, this interval, like the [[tritone]], is described as being "mi contra fa", and therefore is the "diabolus in musica" (the Devil in music).<ref>Andreas Werckmeister, ''[http://reader.digitale-sammlungen.de/de/fs1/object/display/bsb10527826_00005.html Harmonologia musica, oder kurze Anleitung zur musicalischen Composition]'' (Frankfurt and Leipzig: Theodor Philipp Calvisius, 1702): 6, and ''[http://reader.digitale-sammlungen.de/de/fs1/object/display/bsb10527832_00005.html Musicalische Paradoxal-Discourse, oder allgemeine Vorstellungen]'' (Quedlinburg: Theodor Philipp Calvisius, 1707): 75–76.</ref> In 12-tone [[equal temperament]], it is the [[enharmonic]] equivalent of a diatonic semitone or [[minor second]],<ref name=Porter/> although in other tunings the diatonic semitone is a wider interval. |
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The interval of the unison can not be diminished (i.e. there is no "diminished unison"), because any alteration to the unison increases its size, thus [[augmentation (music)#Augmentation of intervals|augmenting]] rather than [[diminution#Diminution of intervals|diminishing]] it.<ref name=kostya/><ref name=day/><ref name=surmani/><ref name=journal/><ref name=gardner/><ref name=smith/><ref name=aikin/><ref name=foote/> |
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== See also == |
== See also == |
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Revision as of 07:29, 5 November 2014
| Inverse | Diminished octave |
|---|---|
| Name | |
| Other names | Chromatic semitone |
| Abbreviation | A1 |
| Size | |
| Semitones | 1 |
| Interval class | 1 |
| Just interval | 25:24 |
| Cents | |
| 12-Tone equal temperament | 100 |
| 24-Tone equal temperament | 100 |
| Just intonation | 71 |
In modern Western tonal music theory an augmented unison or augmented prime[3] is the interval between two notes on the same staff position, or denoted by the same note letter, whose alterations cause them, in ordinary equal temperament, to be one semitone apart. In other words, it is a unison where one note has been altered by a half-step, such as B♭ and B♮ or C♮ and C♯. The interval is often described as a chromatic semitone.[4] Historically, this interval, like the tritone, is described as being "mi contra fa", and therefore is the "diabolus in musica" (the Devil in music).[5] In 12-tone equal temperament, it is the enharmonic equivalent of a diatonic semitone or minor second,[1] although in other tunings the diatonic semitone is a wider interval.
See also
References
- ^ a b Porter, Steven (1986). Music, A Comprehensive Introduction, p.66. ISBN 978-0-935016-81-9.
- ^ Burrows, Terry (1999). How To Read Music, p.62. ISBN 978-0-312-24159-9.
- ^ Blood, Brian (2008 rev 2009). "Intervals". Music theory online. Dolmetsch Musical Instruments. Retrieved 25 December 2009.
{{cite web}}: Check date values in:|date=(help) - ^ Rushton, Julian. "Unison (prime)]". Grove Music Online. Oxford Music Online. Retrieved August 2011.
{{cite web}}: Check date values in:|accessdate=(help) (subscription needed) - ^ Andreas Werckmeister, Harmonologia musica, oder kurze Anleitung zur musicalischen Composition (Frankfurt and Leipzig: Theodor Philipp Calvisius, 1702): 6, and Musicalische Paradoxal-Discourse, oder allgemeine Vorstellungen (Quedlinburg: Theodor Philipp Calvisius, 1707): 75–76.
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| Other intervals |
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