METHOD AND APPARATUS FOR IDENTIFYING ACOUSTIC BACKGROUND ENVIRONMENTS TO ENHANCE AUTOMATIC SPEECH RECOGNITION
First Claim
Patent Images
1. A method of identifying an acoustic environment of a caller, the method comprising:
- analyzing acoustic features of a received audio signal from a caller;
receiving meta-data information;
classifying a background environment of the caller based on the analyzed acoustic features and the meta-data;
selecting an acoustic model matched to the classified background environment from a plurality of acoustic models, each of the plurality of acoustic models being generated for a particular predefined background environment; and
performing speech recognition on the received audio signal using the selected acoustic model.
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Abstract
Disclosed are systems, methods, and computer readable media for identifying an acoustic environment of a caller. The method embodiment comprises analyzing acoustic features of a received audio signal from a caller, receiving meta-data information, classifying a background environment of the caller based on the analyzed acoustic features and the meta-data, selecting an acoustic model matched to the classified background environment from a plurality of acoustic models, and performing speech recognition as the received audio signal using the selected acoustic model.
305 Citations
24 Claims
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1. A method of identifying an acoustic environment of a caller, the method comprising:
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analyzing acoustic features of a received audio signal from a caller; receiving meta-data information; classifying a background environment of the caller based on the analyzed acoustic features and the meta-data; selecting an acoustic model matched to the classified background environment from a plurality of acoustic models, each of the plurality of acoustic models being generated for a particular predefined background environment; and performing speech recognition on the received audio signal using the selected acoustic model. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for identifying an acoustic environment of a caller, the system comprising:
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a module configured to analyze acoustic features of a received audio signal from a caller; a module configured to receive meta-data information; a module configured to classify a background environment of the caller based on the analyzed acoustic features and the analyzed meta-data; a module configured to select an acoustic model matched to the classified background environment from a plurality of acoustic models, each of the plurality of acoustic models being generated for a particular background environment; and a module configured to perform speech recognition on the received audio signal using the selected acoustic model. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A tangible computer readable medium storing a computer program having instructions for controlling a computing device to identify an acoustic environment of a caller, the instructions comprising:
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analyzing acoustic features of a received audio signal from a caller; receiving meta-data information; classifying a background environment of the caller based on the analyzed acoustic features and the analyzed meta-data; selecting an acoustic model matched to the classified background environment from a plurality of acoustic models, each of the plurality of acoustic models being generated for a particular background environment; and performing speech recognition as the received audio signal using the selected acoustic model.
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Specification