- Diminished triad
Infobox Chord| chord_name=diminished triad
first_interval=root
second_interval=minor third
third_interval=diminished fifth
More specifically, it is a triad (a diminished triad (Audio|Diminished triad on B.mid|Play)) consisting of aminor third and diminished fifth above the root — if built on C, a diminished chord would have a C, an Emusic|b and a Gmusic|b. It resembles aminor triad with a lowered (or "diminished") fifth.In the
common practice period , the diminished chord is considered dissonant, or unstable. It lacks tonal center or drive because the diminished fifth symmetrically divides theoctave .A diminished chord occurs in a
major scale only on the seventh scale degree; in the key of C, this is BDF. This also occurs in theseventh chord built on the fifth note (that is, the "dominant seventh "); in C, this is GBDF.In a twelve-tone
equal tempered tuning, a diminished chord has 3semitone s between the third and fifth, 3 between the root and third, and 6 between the root and fifth. It is represented by the integer notation 0, 3, 6.
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