Speaker recognition
First Claim
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1. A method for text-dependent Speaker Recognition using a speaker model obtained by adaptation of a Universal Background Model,wherein the speaker model is a speaker adapted Hidden Markov Model,wherein the speaker model uses Bayesian inference to link observed parameters and hidden parameters,wherein the observed parameters are the feature vectors xnmt of utterance m of speaker n and time index t, andwherein the hidden parameters are at least one of a group of:
- the speaker factor yn for each speaker n,the channel factors unm of the utterance m of speaker n,the active state snmt generating the feature vector xnmt, andthe active component znmt generating the feature vector xnmt.
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Abstract
Method for text-dependent Speaker Recognition using a speaker adapted Universal Background Model, wherein the speaker adapted Universal Background Model is a speaker adapted Hidden Markov Model comprising channel correction.
70 Citations
47 Claims
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1. A method for text-dependent Speaker Recognition using a speaker model obtained by adaptation of a Universal Background Model,
wherein the speaker model is a speaker adapted Hidden Markov Model, wherein the speaker model uses Bayesian inference to link observed parameters and hidden parameters, wherein the observed parameters are the feature vectors xnmt of utterance m of speaker n and time index t, and wherein the hidden parameters are at least one of a group of: -
the speaker factor yn for each speaker n, the channel factors unm of the utterance m of speaker n, the active state snmt generating the feature vector xnmt, and the active component znmt generating the feature vector xnmt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44)
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24. A method for text-dependent Speaker Recognition using a text-dependent and a text-independent system, wherein a model for the text-dependent system is adapted in an unsupervised way, and wherein, in addition, a model for the text-independent system for the speaker and the phrase is built,
wherein the model uses Bayesian inference to link observed parameters and hidden parameters, wherein the observed parameters are the feature vectors xnmt of utterance m of speaker n and time index t, and wherein the hidden parameters are at least one of a group of: -
the speaker factor yn for each speaker n, the channel factors unm of the utterance m of speaker n, the active state snmt generating the feature vector xnmt, and the active component znmt generating the feature vector xnmt. - View Dependent Claims (26, 27, 28, 36, 45, 46, 47)
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Specification