| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To properly evaluating SN condition by judging the presence or the absence of the periodicity of a measuring signal. <P>SOLUTION: A frequency analysis of a pulse wave signal or a body movement signal which is a measuring signal is performed, a first higher harmonic wave of the measuring signal is identified from the result of the frequency analysis, a noise base line candidate group which is a baseline other than a base line corresponding to an n-th high harmonic wave (n is a natural number) of the measuring signal is extracted in the result of the frequency analysis from the first high harmonic wave, it is judged whether or not the measuring signal has periodicity using the noise base line candidate group. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
