本文提出一种新类型(通带衰减为最大平坦型)的通用参数滤波器的逼近方法。
An approximation method is presented for a new type of general parameter filter whose attenuation response in the passband is maximally flat.
该滤波器在采用COSINE滤波器提高阻带特性的基础上，级联了一个SINE滤波器，补偿了其通带衰减。
A cascaded SINE filter is introduced after the COSINE one which improves the stopband characteristics to compensate the passband drop.
尤其是本文把正则阶作为约束条件之一，从而保证了滤波器通带的平坦性和阻带的快速衰减，并且在阻带滤波器的频谱值非常接近于零。
Especially, regularity as one of the constraints assure the flatness in passband and the high attenuation in stopband, even the value of stopband response is very close to zero.
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