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DEVICE, METHOD AND PROGRAM FOR CONVERTING FILTER COEFFICIENT OF FIR FILTER
DEVICE, METHOD AND PROGRAM FOR CONVERTING FILTER COEFFICIENT OF FIR FILTER
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机译:转换fir滤波器的系数的装置,方法和程序
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摘要
PROBLEM TO BE SOLVED: To provide a filter coefficient conversion device, method and program that convert a computer-determined filter coefficient of a FIR filter (BPF) comprising a real component to a complex filter coefficient including an imaginary component.;SOLUTION: A filter coefficient conversion device 2 includes: an inverse discrete Fourier transform section 4 for performing an inverse discrete Fourier transform on a filter coefficient comprising a real component to perform a frequency analysis of the filter coefficient; an alias removal section 6 for removing an alias component from the IDFT result acquired by the inverse discrete Fourier transform section 4; and a discrete Fourier transform section 8 for performing a discrete Fourier transform on the IDFT result with the alias component removed in the alias removal section 6 to generate a complex filter coefficient.;COPYRIGHT: (C)2014,JPO&INPIT
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