Title:
PERIODIC ABNORMAL SOUND DETECTING SYSTEM
Document Type and Number:
Japanese Patent JPS5432374
Kind Code:
A
Abstract:
PURPOSE: To detect periodic abnormal sounds by so arranging the system that the filter units which are in the tuning relation with the production frequency of abnormal sounds show the strongest response with the output signal of an acoustic transducer.
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Inventors:
ODA MINORU
Application Number:
JP9891577A
Publication Date:
March 09, 1979
Filing Date:
August 17, 1977
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G10L15/08; G01H3/00; G10L15/10; (IPC1-7): G01H3/00; G10L1/02