数字滤波器的两个理论公式及其应用

本文从傅里叶变换理论和随机过程理论出发,导出描述数字滤波器性质的两个公式,称之为滤波器的频谱窗和滤波器的嗓声压缩程度,并应用这两个公式对工程技术领城中常用的二项式滤波和最小二乘滤波进行了分析比较。

TWO THEORICAL EQUATIONS OF THE DIGITAL FILTER AND IT''''S APPLICATION

From the theory of fourier transformation and random process this paper inferres two equations describing digital filter's properties which are called filter's frequency spectrum window and noise compress extent. They are applied to discussing least square filtering and binomial filtering which are commonly used in the field of engineering and technique. And some useful conclusions are drawn.