octaveKK [ˋɑktɪv] /ˈɑktɪv/發音名詞1八度、八度音程音樂She can sing over three octaves without straining her voice.她能唱超過三個八度,而且不會傷到嗓子。2高八度音、低八度音音樂Try playing the melody an octave higher on the piano.試著把這段旋律在鋼琴上高八度彈一次。3倍頻程聲學The filter cuts the signal by twelve decibels per octave.這個濾波器每倍頻程將訊號衰減十二分貝。4八行詩節詩學The sonnet opens with an octave and closes with six lines.這首十四行詩以八行詩節開頭,最後以六行收束。