一维线性相位FIR数字滤波器的频域最小平方误差设计方法

A Method for Designing One-dimensional Linear Phase FIR DigitalFilter Using Minimum Square Error Function in Frequency Domain

本文提出了一种设计一维线性相位FIR数字滤波器的新方法。该方法采用频域的最小平方误差函数使所求的增益特性逼近所希望的增益特性 ,其计算公式非常简单 ,并可设计任意形状增益特性的FIR数字滤波器。

A new method for designing one-dimensional linear phase digital filter is proposed.This method approximates the desired gain characteristics using minimum square error function.Because of its very simple formulation,This method can be used to design FIR digital filters with the various shape's gain characteristics.The design instances show that the proposed method is very effective.