线性相位切比雪夫数字滤波器的时窗函数

切比雪夫滤波器是一种性能优良的滤波器，由于是在频域上定义其响应特性，从而限制了它的适用性。本文利用切比雪夫多项式，直接百坟域上定义线性相位切比雪夫数字滤波器的时窗函数，结合实例说明这种时窗函数显式具有一定的实用价值，并简要讨论了数据加权和补零这个基本问题。

On the Window of the Chebyshev Digital Filter with Linear Phase

Although the Chebyshev filter possesses attractive performances,its applications are limited due to the response properties being defined in the frequency domain. In this paper, by means of the Chebyshev polynomial, an explicit window expression of the Chebyshev digital filter with linear phase is introduced,and an example demonstrates that the explicit window is useful and efficient. Besides,a general problem about the weighted and zeroed data is discussed in brief.