Diminished triad

diminished triad
Component intervals from root
diminished fifth (tritone)
minor third
root
Tuning
45:54:64; 54:45=6:5 & 64:45
Forte no. / Complement
3-10 / 9-10

In music theory, a diminished triad is a triad with a minor third and a diminished fifth above the root. When using chord symbols, it may be indicated by the symbols "dim", "o", "m♭5", or "MI(♭5)". However, in most popular-music chord books, the symbol "dim" or "o" represents a diminished seventh chord (a four-tone chord), which in some modern jazz books and music theory books is represented by the "dim7" or "o7" symbols.

For example, the diminished triad built on B, written as Bo, has pitches B-D-F:

{ \omit Score.TimeSignature \relative c' { <b d f>1 } }

The chord can be represented by the integer notation {0, 3, 6}.

In the common practice period, the diminished triad was considered dissonant because of the diminished fifth (or tritone).

This page is issued from Wikipedia. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.