基于雷米兹交换算法设计线性相位对数FIR滤波器

Linear Phase Log FIR Filter Design Based on Remez Exchange Algorithm

根据线性相位对数FIR滤波器幅度响应与线性相位FIR滤波器幅度响应的关系 ,将线性相位对数滤波器设计转换为线性相位FIR滤波器设计。该方法直接采用雷米兹交换算法即可获得线性相位对数滤波器通带和阻带的等纹波特性。另外 ,该方法既可基于频域均匀采样也可基于频域非均匀采样 。

In this paper,according to the relationship between the magnitude response of liner phase FIR filter and that of linear phase log FIR filter,the authors convert linear phase log FIR filter design to linear phase FIR design.Using Remez exchange algorithm,equiripple passband and stopband characteristic of linear phase log filter can be directly obtained.