METHOD FOR DETECTING ABNORMAL SOUND AND METHOD FOR JUDGING ABNORMALITY IN STRUCTURE BY USE OF DETECTED VALUE THEREOF, AND METHOD FOR DETECTING SIMILARITY BETWEEN OSCILLATION WAVESAND METHOD FOR RECOGNIZING VOICE BY USE OF DETECTED VALUE THEREOF

摘要

The present invention provides a method for obtaining an accurate detectedvalueof a similarity, such as an hitting sound. The method includes the steps of :creatingoriginal standard/input pattern vectors each having a feature quantity of anhittingsound; creating a skewness-weighting vector and a kurtosis-weighting vectorbasedon a reference pattern vector of a reference shape; calculating a skewness-weightedstandard pattern vector and a kurtosis-weighted standard pattern vector byproduct-sum operation using component values of the skewness-weighting vectorandthe kurtosis-weighting vector and a component value of the original standardpatternvector; creating a dual and weighted standard pattern vector based on thesevectorsand similarly creating a dual and weighted input pattern vector; creating dualand selected standard/input pattern vectors based on the dual and weightedstandard/input pattern vectors; and setting an angle between the dual andselectedstandard and input pattern vectors as a geometric distance value between theoriginal standard and input pattern vectors .