Octave (interval region): Difference between revisions

[[File:jid_2_1_pluck_adu_dr220.mp3]] [[:File:jid_2_1_pluck_adu_dr220.mp3|sound sample]]

The '''octave''' is one of the most basic [[Gallery_of_Just_Intervals|intervals]] found in musical systems throughout the entire world. It is usually called the "interval of equivalence" because tones separated by an octave are perceived to have the same or similar pitch class to the average human listener. The reason for this phenomenon is probably due to the strong region of attraction of low [[Harmonic_Entropy|harmonic entropy]], or the strong amplitude of the second [[Harmonic|harmonic]] in most harmonic instruments.

Strangely enough, the Pelog and Slendro scales of the Javanese contain near-octaves even though gamelan instruments exhibit inharmonic spectra. It is most likely reminiscent of an older musical system, or derived using the human voice instead of inharmonic instruments.

==Links==

<ul><li>[http://www.kylegann.com/Octave.html Anatomy of an Octave] by [[Kyle_Gann|Kyle Gann]]</li></ul>

==see also==

<ul><li>[[prime_interval|Prime Interval]]</li><li>[[Gallery_of_Just_Intervals|Gallery of Just Intervals]]</li><li>[[Toctave|Toctave]]</li><li>[[EDO|EDO]]</li><li>[[Ditave|Ditave]] - an alternative more neutral name</li></ul>      [[Category:interval]]