Augmented unison

Augmented unison

Inverse	Diminished octave
Name
Other names	Chromatic semitone
Abbreviation
Size
Semitones	1
Interval class	1
Just interval
Cents
Equal temperament	100
24 equal temperament
Just intonation

In modern Western tonal music theory an augmented unison is the interval between two notes on the same staff position, or having 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 raised by a half-step, such as B♭ and B♮ or C and C♯. The interval is often described as a chromatic semitone.^[1]

See also

• List of musical intervals

References

1. ^ Rushton, Julian. "Unison (prime)"]. Grove Music Online. Oxford Music Online. http://www.oxfordmusiconline.com/subscriber/article/grove/music/28790. Retrieved August 2011.  (subscription needed)

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