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基于MATLAB的频率采样法设计FIR滤波器
徐艳1,冯涛2,童万平1
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摘要:
在总结频率采样设计法的主要设计过程及其特定参数的设计范围给出过渡带采样值设计个数与目标阻带衰减值的关系基础上,利用MATLAB软件对1个FIR滤波器实例进行仿真设计,列出相关数据进行比对。结果表明,在采用频率采样法设计FIR滤波器时,适当选取过渡带采样点的采样值能在频率采样点数与过渡带频率采样点数选定的条件下得到阻带最小衰减的最大值。
关键词:  FIR滤波器  频率采样法  过渡带采样值  MATLAB
DOI:
投稿时间:2010-11-30
基金项目:广西人才培养模式创新实验区建设项目(桂教高教[2008]20号);广西大学高等教育教学改革工程"十一五"第三批立项项目(西大评估字[2007]13号)资助
Frequency Sampling Method for FIR Filter Design
Abstract:
Based on summarizing the main design process of the frequency sampling method design,the scope of designing the special parameter and illuminating the relationship between the designing number of sampling value of transition zone and attenuation calculation of objective stop-band,a simulation design of a FIR filter by MATLAB is invesgated.The relevant data are listed and compared.Simulation results show that using frequency sampling method in FIR filter design,the maximum value of minimum stop-band attenuation,in condition that the number of frequency sampling points and the transition zone sampling points is chosen,will be obtained by selecting the appropriate sampling value of transition zone sampling points.
Key words:  FIR  frequency sampling method  transition zone sampling value  MATLAB

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