An audio effect in which a signal is combined with another version of itself that is an octave higher or lower.

(music) An interval of twelve semitones spanning eight degrees of the diatonic scale, representing a doubling or halving in pitch frequency. / (music) The pitch an octave higher than a given pitch.

Alternative form of octavate

(obsolete) Consisting of eight; eight in number.

plural of octave

(music) Of, pertaining to, or relating to an octave. / Proceeding by intervals of eight. / Octonary; expressed in base-8; octal, octonal.

(music) Transposed by an octave.

Third-person singular simple present indicative form of octavate

plural of octavate

(music, rare, of an instrument) Altered to sound a pitch one octave lower than its usual range.