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Title:
METHOD FOR ABNORMAL SOUND SOURCE DETECTION AND APPARATUS FOR PERFORMING SAME
Document Type and Number:
WIPO Patent Application WO/2018/097620
Kind Code:
A1
Abstract:
An acoustic analysis method and an abnormal sound source detection apparatus using the same are disclosed. The abnormal sound source detection apparatus according to an embodiment of the present invention comprises: an acoustic signal acquisition unit for acquiring an acoustic signal; a preprocessing unit for sampling the acquired acoustic signal and dividing the acquired acoustic signal into a plurality of short-term frames; a short-term frame energy calculation unit for calculating a short-term frame energy for each of the short-term frames; a spectrum density calculation unit for calculating a spectrum density of each of the short-term frames; a discrimination estimate value calculation unit for calculating a discrimination estimate value relating to whether or not each of the short-term frames is included in an abnormal sound source detection section; a threshold value setting unit for setting a threshold value for determining a boundary of the abnormal sound source detection section with respect to each of the short-term frame energy, the spectrum density, and the discrimination estimate value calculated for each of the short-term frames; and an abnormal sound source detection section determining unit for determining the abnormal sound source detection section in the acoustic signal on the basis of the short-term frame energy, the spectrum density, and the discrimination estimate value and the threshold value calculated for each of the short-term frames.

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Inventors:
KIM YOUNG-SUB (KR)
KIM JUNG-HO (KR)
Application Number:
PCT/KR2017/013422
Publication Date:
May 31, 2018
Filing Date:
November 23, 2017
Export Citation:
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Assignee:
SIGNALWORKS CO LTD (KR)
International Classes:
G01N29/04; G01H17/00; G01Q10/06; G06F19/00
Foreign References:
KR101657257B12016-09-13
JP2007315863A2007-12-06
JP2009008823A2009-01-15
KR20160027351A2016-03-10
KR20120051172A2012-05-22
Attorney, Agent or Firm:
DOOHO IP LAW FIRM (KR)
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