【摘要】 通过分析二维ＦＩＲ数字滤波器设计的特点，提出一种频域—空域交替逼近的ＣＡＤ方法，并给出了应用此方法的设计示例．结果表明，这种方法简捷实用，效果良好更多还原

【Abstract】 Based on analysing the design characteristics of 2D FIR digital filters, this paper presents a 2D FIR digital filters CAD method by frequencyspatial domains alternate approaching, and give two applied examples. The results show that this CAD method is suitable particularly for designing 2D FIR digital filters with specical frequency characteristics.更多还原