| 摘要 |
<p>The method involves filtering a signal e.g. time-discrete and value-discrete signals, by a frequency-dependent periodical filter for generating a filtered signal. A quotient is determined from values of amplitude quotient of the filtered signal to another filtered signal. Frequency of the signal is determined, where an amplitude value of relative frequency response corresponds to the amplitude quotient, and the relative frequency response is a quotient of an amplitude frequency response of the filter to an amplitude frequency response of another frequency-dependent periodical filter.</p> |
