CYCLIC SIGNAL PROCESSING METHOD, CYCLIC SIGNAL CONVERSION METHOD, CYCLIC SIGNAL PROCESSING DEVICE, AND CYCLIC SIGNAL ANALYSIS METHOD

摘要

It is possible to provide a cyclic signal processing method, a cyclic signal conversion method, and a cyclic signal processing device which are not based on a spectrum model and can reduce the periodicity affect. Among signals having periodicity, time windows are respectively arranged so that their centers are at the division position which divides the basic frequency in the time direction by 1/n (n is an integer not smaller than 2) so as to extract portions of different ranges. For the plurality of portions extracted by the respective time windows, a power spectrum is calculated and the calculated power spectrum is added with the same ratio.