n.八音度；倍頻程
Can you span an octave on the piano? 乍能按到鋼琴的八個(gè)鍵嗎？
These notes are an octave apart. 這些音相距八度.
Each successive noise function you add is known as an octave. 每個(gè)你所疊加的噪聲函數(shù)就是一個(gè)倍頻。
八(音)度
