在高阶IIR滤波器实现中减小量化噪声的一种方法

A Method of Noise Reduction in Realization of High-order IIR Filters

在正规直接型IIR滤波器的实现中,提出一种反馈回路,用以减小量化误差.这种方法是基于在希望的无噪声滤波器和用Remez回路设计的滤波器间获得最小化加权Chebyshev误差.

An efficient method is proposett to design error feedback to reduce quantization noise in cauonical direct form sedlization of IIR filters. The method is based on minimizing the weighted Chebyshev error dxisted between the desired noise free filter and designed one using a Remez loop.