Augmented second

In Western classical music, an augmented second is an interval created by widening a major second by a chromatic semitone, spanning three semitones and enharmonically equivalent to a minor third in 12-tone equal temperament. For instance, the interval from C to D is a major second, two semitones wide, and the interval from C to D is an augmented second, spanning three semitones. : { \override Score.TimeSignature #'stencil = ##f \relative c' { \time 4/4 \set Score.tempoHideNote = ##t \tempo 1 = 20 1 } }

In Western classical music, an augmented second is an interval created by widening a major second by a chromatic semitone, spanning three semitones and enharmonically equivalent to a minor third in 12-tone equal temperament. For instance, the interval from C to D is a major second, two semitones wide, and the interval from C to D is an augmented second, spanning three semitones. { \override Score.TimeSignature 'stencil = ##f \relative c' { \time 4/4 \set Score.tempoHideNote = ##t \tempo 1 = 20 1 } } ==Tuning== An augmented second is enharmonically equivalent to a minor third in 12-tone equal temperament ( ), but is distinguished in other tunings. In tunings near quarter-comma meantone it approximates the septimal minor third of ratio 7:6 ( ). In pythagorean tuning and schismatic temperament, however, it closely approximates the classical minor third of ratio 6:5 ( ). In superpyth temperament, the fifth is sharpened so that the augmented second reaches the classical major third of ratio 5:4 ( ). The 75:64 just augmented second ( ) arises in the justly tuned C harmonic minor scale between A (tuned to 8:5) and B (tuned to 15:8). It is very close to the 7:6 septimal minor third, differing by a septimal kleisma. ==References==

Text derived from https://en.wikipedia.org/w/index.php?oldid=1334433702 under CC BY-SA 4.0; modifications have been made.