... ellipse 椭圆 ellipse of distortion 变形椭圆 ellipse of revolution 旋转椭圆 ...
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A back and forward filter with steeper transitional band was designed of ellipse function. It can remove nonlinear phase distortion caused by IIR filter.
利用椭圆函数滤波器较陡的过渡带特性设计前向和后向滤波器,消除由于IIR滤波器造成滤波后的数据相位非线性失真。
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