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1. WO2019057847 - SIGNAL PROCESSOR AND METHOD FOR PROVIDING A PROCESSED AUDIO SIGNAL REDUCING NOISE AND REVERBERATION

Publication Number WO/2019/057847
Publication Date 28.03.2019
International Application No. PCT/EP2018/075529
International Filing Date 20.09.2018
Chapter 2 Demand Filed 22.07.2019
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 21/0264 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
0264characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
CPC
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 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 21/0232
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
0232Processing in the frequency domain
G10L 21/0264
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
0264characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
Applicants
  • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE]/[DE]
Inventors
  • BRAUN, Sebastian
  • HABETS, Emanuel
Agents
  • SCHENK, Markus
  • ZINKLER, Franz
  • ZIMMERMANN, Tankred
  • STÖCKELER, Ferdinand
  • HERSINA, Günter
  • BURGER, Markus
  • SCHAIRER, Oliver
  • PFITZNER, Hannes
  • KÖNIG, Andreas
  • SCHLENKER, Julian
Priority Data
17192396.421.09.2017EP
18158479.823.02.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SIGNAL PROCESSOR AND METHOD FOR PROVIDING A PROCESSED AUDIO SIGNAL REDUCING NOISE AND REVERBERATION
(FR) PROCESSEUR DE SIGNAL ET PROCÉDÉ DE FOURNITURE D'UN SIGNAL AUDIO TRAITÉ RÉDUISANT LE BRUIT ET LA RÉVERBÉRATION
Abstract
(EN)
A signal processor for providing one or more processed audio signals on the basis of one or more input audio signals is configured to estimate coefficients of an autoregressive reverberation model using the input audio signals and the delayed noise-reduced reverberant signals obtained using a noise reduction. The signal processor is configured to provide noise-reduced reverberant signals using the input audio signals and the estimated coefficients of the autoregressive reverberation model. The signal processor is configured to derive noise-reduced and reverberation-reduced output signals using the noise-reduced reverberant signals and the estimated coefficients of the autoregressive reverberation model. A method and a computer program comprise a similar functionality.
(FR)
L'invention concerne un processeur de signal destiné à fournir un ou plusieurs signaux audio traités sur la base d'un ou de plusieurs signaux audio d'entrée, ledit processeur de signal étant configuré pour estimer des coefficients d'un modèle de réverbération autorégressif à l'aide des signaux audio d'entrée et des signaux réverbérés à bruit réduit retardés obtenus par réduction de bruit. Le processeur de signal est configuré pour fournir des signaux réverbérés à bruit réduit à l'aide des signaux audio d'entrée et des coefficients estimés du modèle de réverbération autorégressif. Le processeur de signal est configuré pour dériver des signaux de sortie à bruit réduit et à réverbération réduite à l'aide des signaux réverbérés à bruit réduit et des coefficients estimés du modèle de réverbération autorégressif. La présente invention concerne également un procédé et un programme d'ordinateur comprenant une fonctionnalité similaire.
Also published as
JP2020516618
RU2020113933
Latest bibliographic data on file with the International Bureau