| Inverse | diminished sixth |
|---|---|
| Name | |
| Other names | - |
| Abbreviation | A3[1] |
| Size | |
| Semitones | 5 |
| Interval class | 5 |
| Just interval | 125:96,[2] 21:16, 64:49 |
| Cents | |
| 12-Tone equal temperament | 500 |
| 24-Tone equal temperament | 500 |
| Just intonation | 457 |
Inclassical music fromWestern culture, anaugmented third (Playⓘ) is aninterval of fivesemitones. It may be produced bywidening amajor third by achromatic semitone.[1][3] For instance, the interval from C to E is a major third, four semitones wide, and both the intervals from C♭ to E, and from C to E♯ are augmented thirds, spanning five semitones.
Being augmented, it is considered adissonant interval.[4]
Itsinversion is thediminished sixth, and its enharmonic equivalent is theperfect fourth.
The just augmented third, E♯, is 456.99 cents or 125:96.Playⓘ The Pythagorean augmented third, E♯+++, is 521.51 cents or 177147:131072, eleven just perfect fifths.Playⓘ
| Twelve- semitone (post-Bach Western) |
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| Other intervals |
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