Fourth complement: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
The '''fourth complement''' of a given [[interval]] is its interval distance from the [[4/3|fourth (4/3)]]. It's very similar to the [[fifth complement]]. It seems to be very useful in regards to [[tetrachord]]s, and even in | The '''fourth complement''' of a given [[interval]] is its interval distance from the [[4/3|fourth (4/3)]]. It's very similar to the [[fifth complement]]. It seems to be very useful in regards to [[tetrachord]]s, and even in helping to describe certain relationships in [[diatonic functional harmony|functional harmony]] such as "parallels" in which notes in the same tetrachord located a third apart from each other share some aspects of their harmonic function. | ||
== History == | == History == | ||
Revision as of 21:02, 16 November 2021
The fourth complement of a given interval is its interval distance from the fourth (4/3). It's very similar to the fifth complement. It seems to be very useful in regards to tetrachords, and even in helping to describe certain relationships in functional harmony such as "parallels" in which notes in the same tetrachord located a third apart from each other share some aspects of their harmonic function.
History
Aside from the usage of the term "fourth complement" this wiki, the term was brought up by Aura in a discussion on Discord concerning reasons that the relationships between Perfect and Augmented Fourths is not entirely analogous to the relationship between major and minor seconds in MOSes despite being separated by the same interval.
Examples
The following interval pairs are fourth complementary to each other