VOICE AUTHENTICATION AND SPEECH RECOGNITION SYSTEM AND METHOD
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Abstract
A method for configuring a speech recognition system comprises obtaining a speech sample utilised by a voice authentication system in a voice authentication process. The speech sample is processed to generate acoustic models for units of speech associated with the speech sample. The acoustic models are stored for subsequent use by the speech recognition system as part of a speech recognition process.
42 Citations
43 Claims
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1-29. -29. (canceled)
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30. A method for configuring a speech recognition system, the method comprising:
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obtaining a speech sample from a user utilised to authenticate the user as part of an authentication process; processing the speech sample to train one or more generic acoustic model(s) for units of speech associated with the speech sample; storing the trained acoustic model(s) in a personalised acoustic model set for the user; selectively re-training the acoustic model(s) in the personalised model set based on additional speech samples provided by the user containing corresponding units of speech; and responsive to determining that the user has accessed a speech recognition function, directing a speech recognition process to access the personalised model set for recognising subsequent user utterances. - View Dependent Claims (31, 32, 33, 34, 35, 38)
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36. A combined speech recognition and voice authentication method, comprising:
responsive to a user being successfully authenticated by a voice authentication function, accessing a personalised set of acoustic language and/or grammar models for use by a speech recognition function in recognising one or more utterances by the user, the acoustic model set containing acoustic language and/or grammar models which have been trained using voice data derived from utterances provided by the user either during enrolment with the authentication function or during one or more subsequent authentications. - View Dependent Claims (37)
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39. A speech recognition system comprising:
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a processing module operable to; obtain a speech sample utilised to authenticate a user as part of an authentication process; process the speech sample to train one or more generic acoustic models for speech units associated with the speech sample and to subsequently store the trained acoustic model(s) in a personalised acoustic model set; selectively re-train the acoustic model(s) based on additional speech samples provided by the user containing corresponding units of speech; and responsive to determining that the user has accessed a speech recognition function, the processing module is further arranged to access the personalised acoustic model set for recognising subsequent user utterances. - View Dependent Claims (40, 41, 42, 43)
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43-1. A system in accordance with claim 39, wherein the personalised acoustic model set is automatically accessed for performing the speech recognition process responsive to the user being successfully authenticated by the authentication system.
Specification