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1. WO1996041214 - APPARATUS AND METHOD FOR SPEECH RECOGNITION USING SPATIAL INFORMATION

Publication Number WO/1996/041214
Publication Date 19.12.1996
International Application No. PCT/US1996/009034
International Filing Date 06.06.1996
Chapter 2 Demand Filed 03.01.1997
IPC
G01H 3/08 2006.01
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
3Measuring vibrations by using a detector in a fluid
04Frequency
08Analysing frequencies present in complex vibrations, e.g. comparing harmonics present
G01V 1/00 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
1Seismology; Seismic or acoustic prospecting or detecting
G10L 21/02 2006.01
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
CPC
G01H 3/08
GPHYSICS
01MEASURING; TESTING
HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
3Measuring ; characteristics of; vibrations by using a detector in a fluid
04Frequency
08Analysing frequencies present in complex vibrations, e.g. comparing harmonics present
G01V 1/001
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
1Seismology; Seismic or acoustic prospecting or detecting
001Acoustic presence detection
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
Applicants
  • SENSIMETRICS CORPORATION [US]/[US]
Inventors
  • DURLACH, Nathaniel, I.
  • BERKOVITZ, Robert, A.
Agents
  • STEINBERG, Donald, R.
Priority Data
08/485,36807.06.1995US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD FOR SPEECH RECOGNITION USING SPATIAL INFORMATION
(FR) APPAREIL ET PROCEDE DE RECONNAISSANCE DE LA PAROLE AU MOYEN D'INFORMATIONS SPATIALES
Abstract
(EN)
A speech recognition system combines content analysis of a signal with directional analysis of the signal to calculate probable contents of the signal and the probability that the contents are as calculated. Content analysis can be combined with independent source direction analysis, consisting of the probable direction of the source and the probability that the source is as determined, to refine the content analysis. The direction analysis can affect either the calculation of the probable contents of the signal or the calculation of the probability that the contents are as calculated. The improved information obtained by combining the content analysis with directional analysis can be used to improve subsequent content analyses or directional analyses.
(FR)
Cette invention se rapporte à un système de reconnaissance de la parole, qui combine l'analyse du contenu d'un signal avec l'analyse directionnelle de ce signal, afin de calculer les contenus probables de ce signal ainsi que la probabilité que ces contenus soient tels qu'ils ont été calculés. L'analyse des contenus peut être combinée avec une analyse de direction de la source indépendante, constituée par la direction probable de la source et par la probabilité que cette source soit telle qu'elle a été déterminée, pour affiner l'analyse des contenus. L'analyse directionnelle peut modifier soit le calcul des contenus probables dudit signal soit le calcul de la probabilité que ces contenus soient tels qu'ils ont été calculés. On peut utiliser les informations améliorées qu'on a obtenues en combinant l'analyse des contenus avec l'analyse directionnelle, pour améliorer les analyses ultérieures des contenus et les analyses directionnelles ultérieures.
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