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介绍了高保真线性相位通带和等波纹阻带的不对称有限冲击响应（ＦＩＲ）低通滤波器的设计方法．该方法在实数域内对通带和阻带分别进行处理．给出了设计实例．
The design method of asymmetric finite impulse response (FIR) low-pass filter for high-fidelity linear phase passband and equal-wave stopband is introduced. This method deals with passband and stopband separately in the real number domain. Given the design examples.