異音判定装置、異音判定方法及びプログラム

Apparatus and method for determining abnormal sound and program

Abstract

【課題】異音の判定の結果と人間の聞こえ方との間の相関をより向上し得る異音判定装置等を提供すること。 【解決手段】製品から発生する駆動音の異音判定のための判定パラメータとして、等価騒音レベル、設定周波数帯域における等価騒音レベル、駆動音のピーク値、駆動音の波高率、及び、所定の閾値を超える音圧レベルの発生頻度の割合を採用し、これらと対応する各閾値との関係から異音の有無を自動判定する。 【選択図】 図6
PROBLEM TO BE SOLVED: To provide an abnormal sound determining apparatus etc. capable of improving the correlation between the determination results of abnormal sound and the way of sounding to human ears. SOLUTION: An equivalent noise level, an equivalent noise level in a set frequency band, a peak value of driving sound produced by a product, a crest factor of the driving sound, and the ratios of the occurrence frequency of sound pressure levels that exceed a prescribed threshold, are adopted as determination parameters for determining abnormal sound of the driving sound, and the presence or absence of the abnormal sound is automatically determined on the basis of relation to thresholds each corresponding to them. COPYRIGHT: (C)2005,JPO&NCIPI

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