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Title:
SIGNAL ANALYSIS DEVICE, SIGNAL ANALYSIS METHOD, AND SIGNAL ANALYSIS PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/163487
Kind Code:
A1
Abstract:
A signal analysis device (1) includes a signal parameter analysis unit (20) that obtains a simultaneous decorrelation matrix P and/or the Hermitian transpose PH thereof wherein PHRjP are all diagonal matrixes in a spatial covariance matrix Rj (j is an integer between 1 and J, inclusive) modeling the spatial characteristics of each of intermingled J (J is an integer of two or greater) source signals, as a parameter for decorrelating the components corresponding to J source signals in an observed signal vector based on an observed signal acquired at I (I is an integer of two or greater) positions which are mutually different.

Inventors:
ITO NOBUTAKA (JP)
NAKATANI TOMOHIRO (JP)
ARAKI SHOKO (JP)
Application Number:
JP2019/003671
Publication Date:
August 29, 2019
Filing Date:
February 01, 2019
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G10L21/028; G10L21/0272
Foreign References:
Other References:
DUONG, N. Q. K. ET AL.: "Under-determined Reverberant Audio Source Separation Using a Full-Rank Spatial Covariance Mode", IEEE TRANS . AUDIO, SPEECH, AND LANGUAGE PROCESSING, vol. 18, no. 7, September 2010 (2010-09-01), pages 1830 - 1840, XP011309385, doi:10.1109/TASL.2010.2050716
ITP NOBUKI ET AL: "accelerationa of sound source categorization methods that use time-varying complex gaussian distributions based on simultaneous diagonalization of spatial covariance matrics", PROCEEDINGS OF 2018 SPRING MEETING OF ACOUSTICAL SOCIETY OF JAPAN, 27 February 2018 (2018-02-27), pages 427 - 430
ITO, N. ET AL.: "FASTFCA: A JOINT DIAGONALIZATION BASED FAST ALGORITHM FOR AUDIO SOURCE SEPARATION USING A FULL-RANK SPATIAL COVARIANCE MODEL", ARXIV PREPRINT, 17 May 2018 (2018-05-17), XP080879179, Retrieved from the Internet [retrieved on 20190415]
ITO, N. ET AL.: "FASTFCA-AS: JOINT DIAGONALIZATION BASED ACCELERATION OF FULL-RANK SPATIAL COVARIANCE ANALYSIS FOR SEPARATING ANY NUMBER OF SOURCES", ARXIV PREPRINT, 24 May 2018 (2018-05-24), XP055633194, Retrieved from the Internet [retrieved on 20190415]
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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