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- In classical music from Western culture, an augmented fifth is an interval produced by widening a perfect fifth by a chromatic semitone. For instance, the interval from C to G is a perfect fifth, seven semitones wide, and both the intervals from C♭ to G, and from C to G♯ are augmented fifths, spanning eight semitones. Being augmented, it is considered a dissonant interval. Its inversion is the diminished fourth, and its enharmonic equivalent is the minor sixth. The augmented fifth only began to make an appearance at the beginning of the common practice period of music as a consequence of composers seeking to strengthen the normally weak seventh degree when composing music in minor modes. This was achieved by chromatically raising the seventh degree (or subtonic) to match that of the unstable seventh degree (or leading tone) of the major mode (an increasingly widespread practice that led to the creation of a modified version of the minor scale known as the harmonic minor scale). A consequence of this was that the interval between the minor mode's already lowered third degree (mediant) and the newly raised seventh degree (leading note), previously a perfect fifth, had now been "augmented" by a semitone. Another result of this practice was the appearance of the first augmented triads, built on the same (mediant) degree, in place of the naturally occurring major chord. As music became increasingly chromatic, the augmented fifth was used with correspondingly greater freedom and also became a common component of jazz chords. Near the end of the nineteenth century the augmented fifth became commonly used in a dominant chord. This would create an augmented dominant (or V) chord. The augmented fifth of the chord would then act as a leading tone to the third of the next chord. This augmented V chord would never precede a minor tonic (or i) chord since the augmented fifth of the dominant chord is identical to the third of the tonic chord. In an equal tempered tuning, an augmented fifth is equal to eight semitones, a ratio of 22/3:1 (about 1.587:1), or 800 cents. The 25:16 just augmented fifth arises in the C harmonic minor scale between E♭ and B. The augmented fifth is a context-dependent dissonance. That is, when heard in certain contexts, such as that described above, the interval will sound dissonant. In other contexts, however, the same eight-semitone interval will simply be heard (and notated) as its consonant enharmonic equivalent, the minor sixth. (en)
- En musique, une quinte augmentée est un intervalle de quinte juste augmenté d'un demi-ton chromatique, soit quatre tons. Dans un tempérament égal à douze demi-tons (gamme tempérée), la quinte augmentée est l'équivalent enharmonique de la sixte mineure. Elle est utilisée dans l'accord de quinte augmentée. (fr)
- L'intervallo di quinta eccedente è l'intervallo esistente tra due note distanti fra loro 8 semitoni, cioè 4 toni. Gli intervalli sono classificati in maggiori, minori e giusti. Un esempio di intervallo di quinta può essere ad esempio Do - Sol, e chiameremo questo intervallo di quinta giusta poiché, facendo riferimento alla scala maggiore della fondamentale dell'intervallo (Do), entrambe le note appartengono a tale scala. La distanza tra Do e Sol è di 5 posizioni: Do - Re - Mi - Fa - Sol e ciò ne determina la distanza dell'intervallo (di quinta, appunto, in questo caso). Tenendo lo stesso intervallo, ma alterando positivamente la nota Sol di un semitono cromatico consideriamo l'intervallo Do - Sol♯: abbiamo così allargato l'intervallo di un semitono ed abbiamo ottenuto l'intervallo di . Aumentando nuovamente di un semitono la nota Sol♯ in Sol doppio diesis, andiamo ad ottenere l'intervallo di quinta più che aumentata. Allargando di nuovo l'intervallo di un semitono ad esempio alterando negativamente la fondamentale Do in Do bemolle otteniamo l'intervallo Do bemolle - Sol doppio diesis che è un intervallo di quinta eccedente. Lo stesso tipo di ragionamento può essere applicato a tutte le quinte giuste conosciute in modo del tutto analogo. (it)
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- An augmented fifth in equal temperament (en)
- An augmented fifth in just intonation (en)
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- Augmented Fifth ET.ogg (en)
- Augmented Fifth JT.ogg (en)
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- An augmented fifth in equal temperament (en)
- An augmented fifth in just intonation (en)
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- En musique, une quinte augmentée est un intervalle de quinte juste augmenté d'un demi-ton chromatique, soit quatre tons. Dans un tempérament égal à douze demi-tons (gamme tempérée), la quinte augmentée est l'équivalent enharmonique de la sixte mineure. Elle est utilisée dans l'accord de quinte augmentée. (fr)
- In classical music from Western culture, an augmented fifth is an interval produced by widening a perfect fifth by a chromatic semitone. For instance, the interval from C to G is a perfect fifth, seven semitones wide, and both the intervals from C♭ to G, and from C to G♯ are augmented fifths, spanning eight semitones. Being augmented, it is considered a dissonant interval. Its inversion is the diminished fourth, and its enharmonic equivalent is the minor sixth. (en)
- L'intervallo di quinta eccedente è l'intervallo esistente tra due note distanti fra loro 8 semitoni, cioè 4 toni. Gli intervalli sono classificati in maggiori, minori e giusti. Un esempio di intervallo di quinta può essere ad esempio Do - Sol, e chiameremo questo intervallo di quinta giusta poiché, facendo riferimento alla scala maggiore della fondamentale dell'intervallo (Do), entrambe le note appartengono a tale scala. La distanza tra Do e Sol è di 5 posizioni: Do - Re - Mi - Fa - Sol e ciò ne determina la distanza dell'intervallo (di quinta, appunto, in questo caso). (it)
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- Augmented fifth (en)
- Quinte augmentée (fr)
- Quinta eccedente (it)
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