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本文提出了一种设计一维线性相位FIR数字滤波器的新方法。该方法采用频域的最小平方误差函数使所求的增益特性逼近所希望的增益特性 ,其计算公式非常简单 ,并可设计任意形状增益特性的FIR数字滤波器。设计实例表明提出的方法非常有效
This paper presents a new method for designing one-dimensional linear phase FIR digital filters. The method uses the least square error function in the frequency domain to make the obtained gain characteristic approach the desired gain characteristic, and the calculation formula is very simple, and the FIR digital filter with any shape gain characteristic can be designed. The design example shows that the proposed method is very effective