摘要
FIR数字滤波器具有线性相位、稳定性好等特点,被广泛地应用于生产实践中。关于FIR数字滤波器设计的算法很多,线性规划法和外插法就是其中两种。分别对该两种算法建立相关模型并通过MATLAB进行仿真,结果表明线性规划法得到的设计结果性能较好,但是变量数相对较多,复杂度较大。而外插法则是基于线性规划法的改进算法,该算法权衡了复杂度与性能,使其更适合于工程实际运用。
FIR digital filters are widely used in applications for its linear - phase and guaranteed stability. There have been many algorithms proposed on designing of FIR filters, linear programming and extrapolation are included. In this pa- per, models are established for both of these two algorithms. Simulation shows that though result obtained by linear program- ming is more acceptable, its high complexity and multi variables are not satisfying. In this case, extrapolation is proposed for improvement. This algorithm balances complexity and property, thus making it more preferable for practical application.
出处
《电声技术》
2014年第2期67-70,共4页
Audio Engineering
关键词
FIR数字滤波器
外插法
线性规划法
FIR digital filter
extrapolation algorithm
linear programming algorithm
