INSPECTION METHOD OF MEMBER

PROBLEM TO BE SOLVED: To provide an inspection method capable of determining efficiently the quality of each operation sound generated when operating motor-driven function, relative to a plurality of members having the motor-driven function respectively. SOLUTION: Each operation sound is measured in each of a plurality of frequency bands relative to n-members 10 selected from N-members in total, and the quality of each operation sound is determined artificially, and the maximum measured value of a member 10 determined to be a nondefective article is compared with the minimum measured value of a member 10 determined to be a defective article, in each measured frequency band. As a comparison result, frequency bands in which the minimum measured value is larger than the maximum measured value are extracted, and a threshold is set between the maximum measured value and the minimum measured value in each extracted frequency band, and determination between nondefective and defective articles is performed by measuring each operation sound only in the frequency bands having the set threshold, relative to the residual (N-n)-members 10. COPYRIGHT: (C)2009,JPO&INPIT