Title:
WAVE-SOURCE-DIRECTION ESTIMATION DEVICE, WAVE-SOURCE-DIRECTION ESTIMATION METHOD, AND PROGRAM STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2020/003342
Kind Code:
A1
Abstract:
To reduce erroneous estimation of a virtual-image sound source and highly accurately estimate the direction of a sound source, this wave-source-direction estimation device is made to comprise: a plurality of input units for acquiring, as input signals, electrical signals that have been converted from waves acquired by a plurality of sensors; a signal selection unit for selecting at least two pairs that are each a combination of at least two input signals from among the plurality of input signals; a relative delay time calculation unit for calculating, as relative delay times, the wave arrival time differences for each wave source searching direction between the at least two input signals composing each input signal pair; at least one per-frequency estimated-direction-information generation unit for using the input signal pairs and relative delay times to generate estimated wave source direction information for each frequency; and an integration unit for integrating the estimated direction information for each frequency generated by the per-frequency estimated-direction-information generation unit.
Inventors:
ARAI YUMI (JP)
SENDA YUZO (JP)
KONDO REISHI (JP)
SENDA YUZO (JP)
KONDO REISHI (JP)
Application Number:
PCT/JP2018/023970
Publication Date:
January 02, 2020
Filing Date:
June 25, 2018
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01S3/808; G01H3/00
Domestic Patent References:
| WO2018131099A1 | 2018-07-19 | |||
| WO2018003158A1 | 2018-01-04 |
Foreign References:
| JP2011071686A | 2011-04-07 | |||
| JP2015161551A | 2015-09-07 | |||
| JP2010193323A | 2010-09-02 | |||
| JP2008089312A | 2008-04-17 | |||
| JP2010175431A | 2010-08-12 |
Other References:
KATO, MASANORI ET AL.: "TDOA Estimation Based on Phase-Voting Cross Correlation and Circular Standard Deviation", IEICE TECHNICAL REPORT, vol. 6, no. 477, 11 March 2017 (2017-03-11), pages 1230 - 1234, XP033236133, ISSN: 0913-5685
KATO, MASANORI ET AL.: "TDOA Estimation Based on Phase-Voting Cross Correlation and Circular Standard Deviation", 2017 25TH EUROPEAN SIGNAL PROCESSING CONFERENCE(EUSIPCO, 2017, pages 1230 - 1234, XP033236133, ISBN: 978-0-9928626-7-1, DOI: 10.23919/EUSIPCO.2017.8081404
KATO, MASANORI ET AL.: "TDOA Estimation Based on Phase-Voting Cross Correlation and Circular Standard Deviation", 2017 25TH EUROPEAN SIGNAL PROCESSING CONFERENCE(EUSIPCO, 2017, pages 1230 - 1234, XP033236133, ISBN: 978-0-9928626-7-1, DOI: 10.23919/EUSIPCO.2017.8081404
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
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