Processing

Please wait...

Settings

Settings

Goto Application

1. WO2014160443 - APPARATUSES AND METHODS FOR ACOUSTIC CHANNEL AUTO-BALANCING DURING MULTI-CHANNEL SIGNAL EXTRACTION

Publication Number WO/2014/160443
Publication Date 02.10.2014
International Application No. PCT/US2014/026639
International Filing Date 13.03.2014
IPC
H04R 3/04 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
04for correcting frequency response
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
G10K 11/002
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
002Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
G10K 2210/3015
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
2210Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
30Means
301Computational
3015Averaging, e.g. exponential
G10K 2210/3028
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
2210Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
30Means
301Computational
3028Filtering, e.g. Kalman filters or special analogue or digital filters
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 2025/783
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
78Detection of presence or absence of voice signals
783based on threshold decision
G10L 21/02
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
Applicants
  • KOPIN CORPORATION [US]/[US]
Inventors
Agents
  • PELOQUIN, Mark, S.
Priority Data
14/207,25212.03.2014US
61/780,10813.03.2013US
61/941,08818.02.2014US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUSES AND METHODS FOR ACOUSTIC CHANNEL AUTO-BALANCING DURING MULTI-CHANNEL SIGNAL EXTRACTION
(FR) APPAREILS ET PROCÉDÉS POUR AUTO-ÉQUILIBRAGE DE CANAL ACOUSTIQUE DURANT UNE EXTRACTION DE SIGNAL À CANAUX MULTIPLES
Abstract
(EN)
Systems and methods are described to automatically balance acoustic channel sensitivity. A long-term power level of a main acoustic signal is calculated to obtain an averaged main acoustic signal. Segments of the main acoustic signal are excluded from the averaged main acoustic signal using a desired voice activity detection signal A long- term power level of a reference acoustic signal is calculated to obtain an averaged reference acoustic signal. Segments of the reference acoustic signal are excluded from the averaged reference acoustic signal using a desired voice activity detection signal. An amplitude correction signal is created using the averaged main acoustic signal and the averaged reference acoustic signal.
(FR)
L'invention concerne des systèmes et des procédés destinés à équilibrer automatiquement une sensibilité de canal acoustique. Un niveau de puissance à long terme d'un signal acoustique principal est calculé pour obtenir un signal acoustique principal moyenné. Des segments du signal acoustique principal sont exclus du signal acoustique principal moyenné à l'aide d'un signal désiré de détection d'activité vocale. Un niveau de puissance à long terme d'un signal acoustique de référence est calculé pour obtenir un signal acoustique de référence moyenné. Des segments du signal acoustique de référence sont exclus du signal acoustique de référence moyenné à l'aide d'un signal désiré de détection d'activité vocale. Un signal de correction d'amplitude est créé à l'aide du signal acoustique principal moyenné et du signal acoustique de référence moyenné.
Also published as
Latest bibliographic data on file with the International Bureau