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1. (WO2017094862) SPATIAL CORRELATION MATRIX ESTIMATION DEVICE, SPATIAL CORRELATION MATRIX ESTIMATION METHOD, AND SPATIAL CORRELATION MATRIX ESTIMATION PROGRAM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/094862 International Application No.: PCT/JP2016/085821
Publication Date: 08.06.2017 International Filing Date: 01.12.2016
IPC:
G10L 21/0308 (2013.01) ,G10L 21/0232 (2013.01)
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21
Processing 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
02
Speech enhancement, e.g. noise reduction or echo cancellation
0272
Voice signal separating
0308
characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21
Processing 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
02
Speech enhancement, e.g. noise reduction or echo cancellation
0208
Noise filtering
0216
characterised by the method used for estimating noise
0232
Processing in the frequency domain
Applicants:
日本電信電話株式会社 NIPPON TELEGRAPH AND TELEPHONE CORPORATION [JP/JP]; 東京都千代田区大手町一丁目5番1号 5-1, Otemachi 1-chome, Chiyoda-ku, Tokyo 1008116, JP
Inventors:
中谷 智広 NAKATANI, Tomohiro; JP
伊藤 信貴 ITO, Nobutaka; JP
樋口 卓哉 HIGUCHI, Takuya; JP
荒木 章子 ARAKI, Shoko; JP
吉岡 拓也 YOSHIOKA, Takuya; JP
Agent:
特許業務法人酒井国際特許事務所 SAKAI INTERNATIONAL PATENT OFFICE; 東京都千代田区霞が関3丁目8番1号 虎の門三井ビルディング Toranomon Mitsui Building, 8-1, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo 1000013, JP
Priority Data:
2015-23615802.12.2015JP
Title (EN) SPATIAL CORRELATION MATRIX ESTIMATION DEVICE, SPATIAL CORRELATION MATRIX ESTIMATION METHOD, AND SPATIAL CORRELATION MATRIX ESTIMATION PROGRAM
(FR) DISPOSITIF D'ESTIMATION DE MATRICE DE CORRÉLATION SPATIALE, PROCÉDÉ D'ESTIMATION DE MATRICE DE CORRÉLATION SPATIALE, ET PROGRAMME D'ESTIMATION DE MATRICE DE CORRÉLATION SPATIALE
(JA) 空間相関行列推定装置、空間相関行列推定方法および空間相関行列推定プログラム
Abstract:
(EN) An observation feature amount vector is calculated on the basis of observation signals recorded at different locations in a situation in which the target sound source and background noise are present. A mask corresponding to the intended sound source and a mask corresponding to the background noise are estimated. A spatial correlation matrix of the intended sound source including the background noise is calculated on the basis of the observation signals and the mask corresponding to the target sound source. A spatial correlation matrix of the background noise is calculated on the basis of the observation signals and the mask corresponding to the background noise. A spatial correlation matrix of the intended sound source is estimated on the basis of matrices in which each of the spatial correlation matrices is weighted by a predetermined coefficient.
(FR) Selon la présente invention, un vecteur de quantité caractéristique d'observation est calculé sur la base de signaux d'observation enregistrés à des emplacements différents dans un cas où la source sonore cible et un bruit de fond sont présents. Un masque correspondant à la source sonore prévue et un masque correspondant au bruit de fond sont estimés. Une matrice de corrélation spatiale de la source sonore prévue comprenant le bruit de fond est calculée sur la base des signaux d'observation et du masque correspondant à la source sonore cible. Une matrice de corrélation spatiale du bruit de fond est calculée sur la base des signaux d'observation et du masque correspondant au bruit de fond. Une matrice de corrélation spatiale de la source sonore prévue est estimée sur la base de matrices dans lesquelles chacune des matrices de corrélation spatiale est pondérée par un coefficient prédéterminé.
(JA) 目的音源と背景雑音が混在する状況において、異なる位置で収録された観測信号に基づいて観測特徴量ベクトルを計算し、目的音源に対応するマスクと、背景雑音に対応するマスクを推定し、観測信号および目的音源に対応するマスクに基づいて背景雑音を含んだ目的音源の空間相関行列を計算し、観測信号および背景雑音に対応するマスクに基づいて背景雑音の空間相関行列を計算し、さらにそれぞれの空間相関行列を所定の係数で重み付けした行列に基づいて目的音源の空間相関行列を推定する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
CN108292508US20180366135