Abnormal sound detection and learning apparatus, acoustic feature quantity extraction apparatus, abnormal sound sampling apparatus, methods and programs therefor

摘要

The abnormal sound detection and learning apparatus includes a first acoustic feature amount extraction unit for extracting an acoustic feature amount of a normal sound based on learning data of a normal sound using an acoustic feature amount extraction function; The normal sound model updating unit updates the normal sound model using the sound feature amount extraction function and the acoustic feature amount of the abnormal sound based on the simulated abnormal sound using the normal sound learning data Acoustic feature quantity extraction function that updates the acoustic feature quantity extraction function using the second acoustic feature quantity extraction unit that extracts the acoustic feature quantity of the sound, and the acoustic feature quantity of the abnormal sound and the acoustic feature quantity of the normal sound extracted above And an update unit, and repeatedly performing the process of each of the units.