the difference (the interval) between the first and last notes in a series of eight notes on a scale八度- to play an octave higher高八度演奏
- Orbison's vocal range spanned three octaves.奥毕森的音域跨越三个八度。🔊🔊
Topics Musicc2Word OriginMiddle English (originally referring to a period of eight days beginning with the day of a Church festival): via Old French from Latin octava dies ‘eighth day’.