Title:
INFORMATION PROCESSING DEVICE, DETECTION METHOD, AND DETECTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/117219
Kind Code:
A1
Abstract:
An information processing device (100) has an acquisition unit (110) that acquires a sound signal, and a control unit (120) that: divides the sound signal into a plurality of sections; calculates, on the basis of the sound signal, a fluctuation value, which is the amount of fluctuation per section time of each of the plurality of sections; specifies a section, among the plurality of sections, in which the fluctuation value is at or below a preset threshold value; calculates, on the basis of the sound signal, the power of the sound signal in the specified section; specifies the maximum value within the power of the sound signal in the specified section; sets a value based on the maximum value to a detection threshold value; and detects, as sections to be detected, sections having at least the detection value within the power of the sound signal as time passes.
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Inventors:
HANAZAWA TOSHIYUKI (JP)
Application Number:
PCT/JP2019/048921
Publication Date:
June 17, 2021
Filing Date:
December 13, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G10L25/78
Domestic Patent References:
| WO2009078093A1 | 2009-06-25 |
Foreign References:
| JPS62265699A | 1987-11-18 | |||
| JP3812887B2 | 2006-08-23 | |||
| JPH10288994A | 1998-10-27 |
Other References:
See also references of EP 4060662A4
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (JP)
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