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提出了利用凯塞窗设计的FIR数字带通滤波器,利用凯塞窗自由选择主瓣宽度和旁瓣衰减的办法,通过MATLAB进行滤波器的仿真。实验结果表明,利用凯塞窗函数设立的滤波器,是使主瓣具有最大能量意义下的最佳窗函数。
The FIR digital band-pass filter designed by Kaiser window is proposed. The Kaiser window is used to choose the width of the main lobe and the attenuation of the side lobe. The filter is simulated by MATLAB. Experimental results show that the filter set up by Kaiser window function is the best window function in the sense that the main lobe has the maximum energy.