Title:
SIGNAL ANALYSIS DEVICE, SIGNAL ANALYSIS METHOD, AND SIGNAL ANALYSIS PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/194315
Kind Code:
A1
Abstract:
A signal analysis device (1) has an estimation unit (10) that estimates a signal source position prior probability. This probability: is a mixed weight used when, in a case where a parameter with which spatial characteristics of signals from N signal sources (where N is an integer equal to or greater than 2) are modeled is adopted as a spatial parameter, a prior distribution of the spatial parameter with respect to the signal sources is modeled according to a mixed distribution, which is a linear combination of the prior distribution with respect to K signal source position candidates (where K is an integer equal to or greater than 2) of the spatial parameter; and is the probability of a signal arriving from each signal source position candidate for each of the signal sources.
Inventors:
ITO NOBUTAKA (JP)
NAKATANI TOMOHIRO (JP)
ARAKI SHOKO (JP)
NAKATANI TOMOHIRO (JP)
ARAKI SHOKO (JP)
Application Number:
PCT/JP2019/015215
Publication Date:
October 10, 2019
Filing Date:
April 05, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G10L25/51; G10L21/0308
Domestic Patent References:
WO2017141542A1 | 2017-08-24 |
Foreign References:
JP2011164467A | 2011-08-25 |
Other References:
YOSHII, KAZUYOSHI ET AL.: "Infinite Positive Semidefinite Tensor Factorization based on Gamma Process for Music Signal Analysis", IEICE TECHNICAL REPORT, vol. 113, no. 286, November 2013 (2013-11-01), pages 161 - 168, XP055643142
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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