Otonality and utonality
Otonality[1] and utonality[2] are terms introduced by Harry Partch to describe chords whose pitch classes are the harmonics or subharmonics of a given fixed tone (identity[3]), respectively. For example: 1/1, 2/1, 3/1,... or 1/1, 1/2, 1/3,....
"Otonal" redirects here. For a Spanish word "otoñal" meaning autumnal, see es:otoñal.