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整系数数字滤波器的设计 被引量:2
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作者 罗光明 黄晓宇 朱建林 《湘潭大学自然科学学报》 CAS CSCD 2001年第2期89-95,共7页
讨论一种既具FIR滤波器的严格线性相位 ,同时又有IIR滤波器计算量少的整系数滤波器的设计问题 ,并给出仿真结果 .
关键词 频率采样滤波器 谐振器 FFT算法 整系数数字滤波器 设计 滤波速度
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AN APPLICATION OF EVOLUTIONARY PROGRAMMING IN FIR FILTER DESIGN WITH FREQUENCY SAMPLING METHOD 被引量:2
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作者 刘文波 于盛林 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2000年第2期218-223,共6页
Frequency sampling is one of the popular methods in FIR digital filter design. In the frequency sampling method the value of transition band samples, which are usually obtained by consulting a table, must be determi... Frequency sampling is one of the popular methods in FIR digital filter design. In the frequency sampling method the value of transition band samples, which are usually obtained by consulting a table, must be determined in order to make the attenuation within the stopband maximal. However, the value obtained by searching for table can not be ensured to be optimal. Evolutionary programming (EP), a multi agent stochastic optimization technique, can lead to global optimal solutions for complex problems. In this paper a new application of EP to frequency sampling method is introduced. Two examples of lowpass and bandpass FIR filters are presented, and the steps of EP realization and experimental results are given. Experimental results show that the value of transition band samples obtained by EP can be ensured to be optimal and the performance of the filter is improved. 展开更多
关键词 evolutionary programming FIR filter frequency sampling
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