Abnormal sound diagnosis apparatus, abnormal sound diagnosis system, abnormal sound diagnosis method and abnormal sound diagnosis program

摘要

A trajectory feature extraction unit (5) for transforming a trajectory showing intensity features in the time direction of the intensity time series (14) acquired by the intensity time series acquisition unit (4) into vectors and extracting a trajectory vector (15) Intensity of sound data generated from reference equipment A vector which is a trajectory showing the intensity feature in the time direction of the time series as input and stores the learned identification parameter (16) as output showing information indicating the state type of the diagnosis target device An identification section (7) for acquiring a K-dimensional score vector (17) for each state type of the diagnosis target device from the identification parameter storage section (6), the trajectory vector (15) and the identification parameter (16) And a judgment unit (8) for referring to the score vector (17) and judging whether the sound generated in the diagnosis target device is normal or abnormal and the type of abnormality.