短語詞組短語signal frequency side band 信號邊頻帶frequency alias band 波段frequency -band energy 論證了頻帶能量Mel frequency -band Mel濾波器frequency covering band 頻率覆蓋范圍multiple frequency absorption band 倍頻吸收帶basic frequency absorption band 基頻吸收帶frequency y band 頻帶artificial frequency dead band 人工失靈區(qū) 返回 frequency band