e.g. C - F is a perfect fourth, C - F is an augmented fourth, and C - F♭ is a diminished fourth.
Wikipedia foundation.
Augmented sixth chord — The interval of an augmented sixth normally resolves outwards by semitone to an octave. Play (help·info) … Wikipedia
Fourth — The word fourth can mean:* ¼, one quarter * Fourth, the ordinal number following third * Perfect fourth in music theory * Augmented fourth or tritone * Subdominant, and the chord built on the subdominant * Fourth of July, an American holiday *… … Wikipedia
Augmented unison — Inverse Diminished octave Name Other names Chromatic semitone Abbreviation Size Semitones … Wikipedia
Augmented fifth — Infobox Interval main interval name = augmented fifth inverse = diminished fourth complement = diminished fourth other names = abbreviation = ? semitones = 8 interval class = 4 just interval = 25:16| cents equal temperament = 800 cents just… … Wikipedia
Augmented triad — Infobox Chord| chord name=Augmented triad first interval=root second interval=major third third interval=augmented fifth In music, an augmented triad (Audio|Augmented triad on C.mid|play) is a triad consisting of two major thirds.Harmonic… … Wikipedia
Augmented seventh chord — Infobox Chord| chord name=Augmented seventh chord first interval=root second interval=major third third interval=augmented fifth fourth interval=minor seventh The augmented seventh chord Audio|Augmented seventh chord on C.mid|Play, or seventh… … Wikipedia
Fourth generation jet fighter — Lockheed Martin F 16. Dassault Mirage … Wikipedia
Perfect fourth — Play (help· … Wikipedia
Major fourth — In music, a major fourth ( Play (help·info)) is the interval from the quarter tone scale, named by Ivan Wyschnegradsky, between the perfect fourth (500 cents) and the augmented fourth (600 cents) and thus 550 cents. It inverts to a … Wikipedia
Diminished fourth — Inverse augmented fifth Name Other names Abbreviation d4[1] Size … Wikipedia
