Title:
音源探査装置、音源探査方法およびそのプログラム
Document Type and Number:
Japanese Patent JP6953287
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a sound source probing apparatus capable of more reliably probing a direction of a sound source targeted for probing located in a probing target range.SOLUTION: A sound source probing apparatus 1 for probing a direction of a sound source targeted for probing includes: a correlation matrix calculation unit 10 that calculates a first correlation matrix which is a correlation matrix of an observation signal which is an acoustic signal collected by a microphone array 200 including two or more microphone units disposed apart from each other; a learning unit 40 that calculates weights by learning such that a linear sum of a plurality of second correlation matrices multiplied by the respective weights is equal to the first correlation matrix where the plurality of second correlation matrices are correlation matrices, which are calculated for respective directions based on an array arrangement of the microphone array 200 and which are stored in advance in a storage 20; and a spatial spectrum calculation unit 100 that calculates, using the weights calculated by the learning unit 40, a spatial spectrum of the observation signal indicating sound pressure intensities in the respective directions.SELECTED DRAWING: Figure 1
Inventors:
Takero Kanamori
Wataru Hayashida
Shintaro Yoshikuni
Wataru Hayashida
Shintaro Yoshikuni
Application Number:
JP2017216735A
Publication Date:
October 27, 2021
Filing Date:
November 09, 2017
Export Citation:
Assignee:
Panasonic Intellectual Property Corporation of America
International Classes:
G10L25/51; G10L21/0308; G10L25/06; H04R3/00
Other References:
Takuya Higuchi et al.,”Unified approach for underdetermined BSS, VAD, dereverberation and DOA estimation with multichannel factorial HMM”,2014 IEEE Global Conference on Signal and Information Processing (GlobalSIP),IEEE,2014年12月03日
Johannes Traa et al.,”Directional NMF for joint source localization and separation”,2015 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA),IEEE,2015年10月18日
Johannes Traa et al.,”Directional NMF for joint source localization and separation”,2015 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA),IEEE,2015年10月18日
Attorney, Agent or Firm:
Hiromori Arai
Eisaku Teratani
Shinichi Michisaka
Eisaku Teratani
Shinichi Michisaka