31 Tone Equal Temperament

Intervals: 17 : Greater Undecimal Tritone

The greater undecimal tritone is a strange-sounding interval that is relatively easy for most people to learn to uniquely identify and distinguish from its nearby neighbors, including the perfect fifth, the two septimal tritones, and its inversion, the lesser undecimal tritone. A bit narrower than a perfect fifth, this interval sounds somewhat dissonant but still shares a bit of the "open" sound of a fifth. It is easily distinguished from a fifth in part because the fifth strongly implies the bottom note as root, based on the relationships of the harmonic series, whereas this interval implies the top note as root.

It has a colder and more stable sound than the septimal tritones.