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1. WO2019194300 - SIGNAL ANALYSIS DEVICE, SIGNAL ANALYSIS METHOD, AND SIGNAL ANALYSIS PROGRAM

Publication Number WO/2019/194300
Publication Date 10.10.2019
International Application No. PCT/JP2019/015041
International Filing Date 04.04.2019
IPC
G10L 21/028 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
0272Voice signal separating
028using properties of sound source
G10L 25/51 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
25Speech or voice analysis techniques not restricted to a single one of groups G10L15/-G10L21/129
48specially adapted for particular use
51for comparison or discrimination
CPC
G10L 2021/02087
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
0208Noise filtering
02087the noise being separate speech, e.g. cocktail party
G10L 21/028
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
0272Voice signal separating
028using properties of sound source
G10L 25/51
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
25Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
48specially adapted for particular use
51for comparison or discrimination
Applicants
  • 日本電信電話株式会社 NIPPON TELEGRAPH AND TELEPHONE CORPORATION [JP]/[JP]
Inventors
  • 伊藤 信貴 ITO, Nobutaka
  • 中谷 智広 NAKATANI, Tomohiro
  • 荒木 章子 ARAKI, Shoko
Agents
  • 特許業務法人酒井国際特許事務所 SAKAI INTERNATIONAL PATENT OFFICE
Priority Data
2018-07347105.04.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SIGNAL ANALYSIS DEVICE, SIGNAL ANALYSIS METHOD, AND SIGNAL ANALYSIS PROGRAM
(FR) DISPOSITIF D’ANALYSE DE SIGNAL, PROCÉDÉ D’ANALYSE DE SIGNAL ET PROGRAMME D’ANALYSE DE SIGNAL
(JA) 信号分析装置、信号分析方法および信号分析プログラム
Abstract
(EN)
A signal analysis device (1), having an estimation unit (10) for: modelling a sound source position occurrence probability matrix Q comprising probabilities of a signal arriving from a plurality of sound source position candidates for each frame representing a time interval pertaining to the sound source position candidates, the modeling being performed using a product of a sound source position probability matrix B comprising probabilities of a signal arriving from each of the sound source position candidates for each sound source for a plurality of sound sources, and a sound source presence probability matrix A comprising probabilities of a signal being present from each of the sound sources for each of the frames; and estimating, on the basis of the modeling, the sound source position probability matrix B and/or the sound source presence probability matrix A.
(FR)
L’invention concerne un dispositif d’analyse de signal (1), possédant une unité d’estimation (10) servant à : modéliser une matrice de probabilités d’occurrence de position de source sonore Q contenant des probabilités qu’un signal arrive en provenance d’une pluralité de positions de source sonore candidates pour chaque trame représentant un intervalle de temps se rapportant aux positions de source sonore candidates, la modélisation étant effectuée par un produit d’une matrice de probabilités de position de source sonore B contenant des probabilités qu’un signal arrive en provenance de chacune des positions de source sonore candidates pour chaque source sonore d’une pluralité de sources sonores, et d’une matrice de probabilités de présence de source sonore A contenant des probabilités qu’un signal soit présent à partir de chacune des sources sonores pour chacune des trames ; et estimer, à partir de la modélisation, la matrice de probabilités de position de source sonore B et/ou la matrice de probabilités de présence de source sonore A.
(JA)
信号分析装置(1)は、複数の音源位置候補についての時間区間であるフレームごとの各音源位置候補から信号が到来する確率からなる音源位置生起確率行列Qを、複数の音源についての音源ごとの各音源位置候補から信号が到来する確率からなる音源位置確率行列Bと、フレームごとの各音源からの信号の存在確率からなる音源存在確率行列Aと、の積でモデル化し、前記のモデル化に基づいて、音源位置確率行列Bおよび音源存在確率行列Aの少なくとも一方を推定する推定部(10)を有する。
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