任意型一维FIR数字滤波器设计新方法

本文介绍了一种设计任意型（宽带、窄带、低阶、高阶、低通、高通、带通、带阻）一维FIR数字滤波器新方法．给出设计不同类型滤波器的统一方法。各种类型滤波器脉冲响应的设计公式简单、计算方便。该方法消除了Gibbs现象．不仅克服了优化设计中收敛速度、设计精度及初值选取等问题，而且减少设计高阶滤波器的时间。最后，本文给出了各种类型滤波器设计的仿真结果。

A New Method for Designing Arbitrary Types of 1-D FIR Digital Filters

In this paper, a new method for arbitrary type 1-D FIR (wide-band , narrow-band , low order, high order , lowpass, highpass, bandpass and bandstop) with linear phase digital filters is proposed . It gives an unified method designing different types of 1-D FIR digital filters . The design formulas of impulse response for various types filters are simpler and more convenient to calculate . This method eliminates the Gibbs phenomenon . It overcomes not only the problems of the convergence speed , design precision and selecting of the original values in the optimal design , but also the disadvantages of longer time taking in designing high order 1-D FIR digital filters . Finally , some simulation results for various types of filters are provided .