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1. WO2020064089 - DETERMINING A ROOM RESPONSE OF A DESIRED SOURCE IN A REVERBERANT ENVIRONMENT

Publication Number WO/2020/064089
Publication Date 02.04.2020
International Application No. PCT/EP2018/075994
International Filing Date 25.09.2018
IPC
G10L 21/0208 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
0208Noise filtering
G10L 21/0272 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
G01H 7/00 2006.01
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
7Measuring reverberation time
G10L 21/0216 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
0208Noise filtering
0216characterised by the method used for estimating noise
G10L 21/038 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
038using band spreading techniques
H04R 3/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers
CPC
G01H 7/00
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
7Measuring reverberation time; ; Room acoustic measurements
G10L 2021/02082
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
02082the noise being echo, reverberation of the speech
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 2021/02166
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
0216characterised by the method used for estimating noise
02161Number of inputs available containing the signal or the noise to be suppressed
02166Microphone arrays; Beamforming
G10L 21/0208
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
G10L 21/0272
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
Applicants
  • HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
  • JIN, Wenyu [CN]/[DE] (US)
Inventors
  • JIN, Wenyu
  • SHERSON, Thomas
  • KLEIJN, Willem Bastiaan
  • SETIAWAN, Panji
Agents
  • KREUZ, Georg
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DETERMINING A ROOM RESPONSE OF A DESIRED SOURCE IN A REVERBERANT ENVIRONMENT
(FR) DÉTERMINATION D'UNE RÉPONSE DE PIÈCE D'UNE SOURCE SOUHAITÉE DANS UN ENVIRONNEMENT RÉVERBÉRANT
Abstract
(EN)
The present disclosure relates to an apparatus and method for determining a room response of a desired source in a reverberant environment from an observed signal received by a plurality of microphones, wherein a direct-path steering vector for the plurality of microphones is determined based on a known direction and/or location of the desired source, a reverberant- path steering vector for the plurality of microphones is determined that maximizes a cross moment of a direct-path response to the observed signal and a reverberant-path response to the observed signal, and the room response is determined based on a combination of the direct-path steering vector and the reverberant-path steering vector. The signal power contained in the reverberant components of the observed signal is hence used to improve the signal-to-interference-plus-noise ratio of the target signal without additional knowledge as compared to a conventional direct-path beamformer.
(FR)
La présente invention concerne un appareil et un procédé pour déterminer une réponse de pièce d'une source souhaitée dans un environnement réverbérant à partir d'un signal observé reçu par une pluralité de microphones. Un vecteur de guidage en trajet direct pour la pluralité de microphones est déterminé sur la base d'une direction et/ou d'un emplacement connu de la source souhaitée, un vecteur de guidage en trajet de réverbération pour la pluralité de microphones est déterminé, lequel maximise un moment de croisement d'une réponse de trajet direct au signal observé et une réponse de trajet de réverbération au signal observé, et la réponse de pièce est déterminée sur la base d'une combinaison du vecteur de guidage en trajet direct et du vecteur de guidage en trajet de réverbération. La puissance de signal contenue dans les composantes réverbantes du signal observé est donc utilisée pour améliorer le rapport signal/brouillage plus bruit du signal cible sans connaissance supplémentaire en comparaison d'un formateur de faisceau à trajet direct classique.
Latest bibliographic data on file with the International Bureau