Title:
音検出装置および音検出方法
Document Type and Number:
Japanese Patent JP5652945
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect a specific sound in a noise environment with ease and high accuracy.SOLUTION: A signal power calculation part and an inclination calculation part calculate a feature value indicating sound data characteristics of collected observation sounds in time series. Meanwhile, an expectation value of the feature value is calculated, as score parameters, from each of a plurality of learning data which is the kind of sound as detection object but different from one another, in time series. A score calculation part calculates a score evaluating sound data based on a difference between the feature value calculated from the sound data and the expectation value of the feature value calculated from the learning data. A generation section detecting part detects positions of maximum and minimum values of the score and detects a specific sound generation section in sound data of the observation sounds based on the positions of the maximum and minimum values.
Inventors:
佐宗 晃
田中 康貴
田中 伸一
谷本 益巳
田中 康貴
田中 伸一
谷本 益巳
Application Number:
JP2010277461A
Publication Date:
January 14, 2015
Filing Date:
December 13, 2010
Export Citation:
Assignee:
綜合警備保障株式会社
独立行政法人産業技術総合研究所
独立行政法人産業技術総合研究所
International Classes:
G01H17/00; G08B13/16; G10L15/10; G10L25/21; G10L25/51
Attorney, Agent or Firm:
Hiroaki Sakai