| 摘要 |
PROBLEM TO BE SOLVED: To make arithmetic power necessary for filtering small. SOLUTION: N continuous input signal samples of each addition component of an input signal are held, at least two input signal samples among N input signal samples that are continuously supplied, which are at least two input signal samples which have to be subjected to equal filter coefficients, are at least combined, each not combined input signal sample and each combined input signal sample are multiplied by a respective corresponding filter coefficient, and the signal samples multiplied by the filter coefficient are integrated to generate a present output signal sample.
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