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1. (WO2018100364) MULTI-MICROPHONE SPEECH PROCESSING SYSTEM
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Pub. No.: WO/2018/100364 International Application No.: PCT/GB2017/053589
Publication Date: 07.06.2018 International Filing Date: 29.11.2017
IPC:
G10L 21/028 (2013.01) ,G10L 15/08 (2006.01)
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
028
using properties of sound source
G PHYSICS
10
MUSICAL INSTRUMENTS; ACOUSTICS
L
SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
15
Speech recognition
08
Speech classification or search
Applicants:
ARM LTD [GB/GB]; 110 Fulbourn Road Cambridge CB1 9NJ, GB
Inventors:
COREY, Ryan Michael; GB
Agent:
TLIP LTD; 14 King Street Leeds LS1 2HL, GB
Priority Data:
15/366,08801.12.2016US
Title (EN) MULTI-MICROPHONE SPEECH PROCESSING SYSTEM
(FR) SYSTÈME DE TRAITEMENT DE LA PAROLE À PLUSIEURS MICROPHONES
Abstract:
(EN) An apparatus for enhancing a speech signal includes a spectral analysis circuit that generates time-frequency spectra of signals from a microphone array, a signal separation filter, and a hardware processor. The hardware processor identifies a key phrase in the signals and aligns a template of the key phrase to time-frequency spectra of a microphone in the array. A mask is generated from the aligned template and applied to the time-frequency spectra. The masked spectra are used to determine acoustic parameters that, in turn, are used to generate coefficients for configuring the source separation filter which is then used to process the spectra to generate an enhanced speech signal. The apparatus maybe used as a front end for a speech recognition engine, for example.
(FR) Selon l'invention, un appareil pour améliorer un signal vocal comprend un circuit d'analyse spectrale qui produit des spectres temps-fréquence de signaux provenant d'un réseau de microphones, un filtre de séparation de signaux et un processeur matériel. Le processeur matériel identifie une phrase clé dans les signaux et aligne un modèle de la phrase clé avec des spectres temps-fréquence d'un microphone dans le réseau. Un masque est produit à partir du modèle aligné et appliqué aux spectres temps-fréquence. Les spectres masqués sont utilisés pour déterminer des paramètres acoustiques qui, à leur tour, sont utilisés pour produire des coefficients pour configurer le filtre de séparation de sources qui est ensuite utilisé pour traiter les spectres pour produire un signal vocal amélioré. L'appareil peut être utilisé comme extrémité frontale pour un moteur de reconnaissance vocale, par exemple.
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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, JO, JP, KE, KG, KH, 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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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: English (EN)
Filing Language: English (EN)