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FILTER COEFFICIENT CALCULATION DEVICE, SIGNAL GENERATION DEVICE INCLUDING THE SAME, FILTER COEFFICIENT CALCULATION METHOD, AND SIGNAL GENERATION METHOD
FILTER COEFFICIENT CALCULATION DEVICE, SIGNAL GENERATION DEVICE INCLUDING THE SAME, FILTER COEFFICIENT CALCULATION METHOD, AND SIGNAL GENERATION METHOD
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机译:滤波器系数计算设备,包括该滤波器系数的信号生成设备,滤波器系数计算方法和信号生成方法
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摘要
A filter coefficient calculation device includes a function unit that has a plurality of functions to be executed by an FIR filter, a function selection unit that selects one or a plurality of functions from among the plurality of functions, and a filter coefficient calculation unit that calculates a filter coefficient in the selected one or plurality of functions, and is configured such that the function unit includes a first transfer function calculation unit, a second transfer function calculation unit, and a third transfer function calculation unit which calculate a transfer function of the FIR filter in the respective functions, and the filter coefficient calculation unit performs inverse Fourier transform on the transfer function in the selected one function or a product of the transfer functions in the plurality of functions to obtain an impulse response of the FIR filter and calculates the impulse response as the filter coefficient.
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