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Digital filter, design method thereof, design device, and digital filter design program
Digital filter, design method thereof, design device, and digital filter design program
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机译:数字滤波器,其设计方法,设计装置和数字滤波器设计程序
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摘要
An original filter is connected to an adjustment filter in the longitudinal way. The original filter has a first filter coefficient of a symmetric numeric string. The adjustment filter has a contact point at a position where the maximum value is acquired in the original filter frequency amplitude characteristic A and has a symmetric second filter coefficient realizing the frequency amplitude characteristic B having the minimum value at the contact point. By executing a convolution calculation of the first filter coefficient and the second filter coefficient, it is possible to design a desired filter coefficient.
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