Differences between four kinds of IIR filters(B)

摘要：文章重点比较了模拟低通、模拟高通、数字低通、数字高通滤波器的相位响应特性。通过滤波实例直观地看出滤波前后的波形变化，进步一加深相位线性变化对滤波影响的理解。 1. Low Pass Analog Filter w p = 0.4 π ; w s = 0.6 π ; A p = 3 d B ; A s = 10 d B ; w_p=0.4\pi ; w_s=0.6\pi;A_p=3dB;A_s

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