IIR数字滤波器的峰值约束最小二乘设计

S. L. Netto, P. Diniz
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引用次数: 1

摘要

提出了一种逼近无限持续脉冲响应(IIR)数字滤波器的方法。该方法能够折衷最大阻带衰减和最小阻带能量需求。该方法基于加权最小二乘(WLS)方法,在每次迭代中使权函数在给定的频率区间内保持恒定。在这种意义上,部分类wls阻带和部分等纹阻带的IIR数字滤波器被有效地设计出来。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Peak-constrained least-squares design of IIR digital filters
An approach for approximating infinite duration impulse response (IIR) digital filters is proposed. The method is able to compromise maximum stopband attenuation and minimum stopband energy requirements. The approach is based on the weighted-least-squares (WLS) method with a weight function which is made constant within a given frequency interval at each iteration. In that sense, IIR digital filters with partially WLS-like and partially equiripple stopbands are efficiently designed.
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