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Patent Searching and Data


Title:
THRESHOLD VALUE ACQUISITION DEVICE, METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/074995
Kind Code:
A1
Abstract:
This threshold value acquisition device acquires a threshold value for assessing whether the degree of abnormality acquired from a target sound is normal or abnormal. The threshold value acquisition device has: a permission frequency setting unit that sets the frequency of permission so that the number of instances when the degree of abnormality is assessed to be abnormal within the set of degrees of abnormality for each prescribed section length, which is part of an acoustic signal in a time series that does not include abnormal sounds, does not exceed the frequency of permission; and a threshold value estimation unit that, using the frequency of permission, estimates a threshold value candidate so that the number of sections assessed to be abnormal for each prescribed section length, which is part of the acoustic signal in the time series, satisfies a prescribed criterion. The threshold value candidate is acquired as a threshold value.

Inventors:
MURATA SHIN (JP)
KOIZUMI YUMA (JP)
HARADA NOBORU (JP)
SAITO SHOICHIRO (JP)
Application Number:
PCT/JP2019/040654
Publication Date:
April 22, 2021
Filing Date:
October 16, 2019
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01M99/00
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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