按允许通过的信号的频率范围的不同,滤波器又分为 （low⁃pass filter), （high⁃pass filter)和带通滤波器（band pass filter) 。
按允许通过的信号的频率范围的不同,滤波器又分为 （low⁃pass filter), （high⁃pass filter)和带通滤波器（band pass filter) 。
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