SPEAKER VERIFICATION METHODS AND APPARATUS
First Claim
1. A method for determining validity of an identity asserted by a speaker using a voice print associated with a user whose identity the speaker is asserting, the voice print obtained from characteristic features of at least one first voice signal obtained from the user uttering at least one enrollment utterance including at least one enrollment word, the method comprising acts of:
- obtaining a second voice signal of the speaker uttering at least one challenge utterance, wherein the at least one challenge utterance includes at least one word that was not in the at least one enrollment utterance;
obtaining at least one characteristic feature from the second voice signal;
comparing the at least one characteristic feature with at least a portion of the voice print to determine a similarity between the at least one characteristic feature and the at least a portion of the voice print; and
determining whether the speaker is the user based, at least in part, on the similarity between the at least one characteristic feature and the at least a portion of the voice print.
3 Assignments
0 Petitions
Accused Products
Abstract
In one aspect, a method for determining validity of an identity asserted by a speaker using a voice print associated with a user whose identity the speaker is asserting, the voice print obtained from characteristic features of at least one first voice signal obtained from the user uttering at least one enrollment utterance including at least one enrollment word is provided. The method comprises acts of obtaining a second voice signal of the speaker uttering at least one challenge utterance, wherein the at least one challenge utterance includes at least one word that was not in the at least one enrollment utterance, obtaining at least one characteristic feature from the second voice signal, comparing the at least one characteristic feature with at least a portion of the voice print to determine a similarity between the at least one characteristic feature and the at least a portion of the voice print, and determining whether the speaker is the user based, at least in part, on the similarity between the at least one characteristic feature and the at least a portion of the voice print.
87 Citations
28 Claims
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1. A method for determining validity of an identity asserted by a speaker using a voice print associated with a user whose identity the speaker is asserting, the voice print obtained from characteristic features of at least one first voice signal obtained from the user uttering at least one enrollment utterance including at least one enrollment word, the method comprising acts of:
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obtaining a second voice signal of the speaker uttering at least one challenge utterance, wherein the at least one challenge utterance includes at least one word that was not in the at least one enrollment utterance; obtaining at least one characteristic feature from the second voice signal; comparing the at least one characteristic feature with at least a portion of the voice print to determine a similarity between the at least one characteristic feature and the at least a portion of the voice print; and determining whether the speaker is the user based, at least in part, on the similarity between the at least one characteristic feature and the at least a portion of the voice print. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer readable medium encoded with at least one program for execution on at least one processor, the program having instructions that, when executed on the at least one processor, perform a method of determining a validity of an identity asserted by a speaker using a voice print associated with a user whose identity the speaker is asserting, the voice print obtained from characteristic features of at least one first voice signal obtained from the user uttering at least one enrollment utterance including at least one enrollment word, the method comprising acts of:
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obtaining a second voice signal of the speaker uttering at least one challenge utterance, wherein the at least one challenge utterance includes at least one word that was not in the at least one enrollment utterance; obtaining at least one characteristic feature from the second voice signal; comparing the at least one characteristic feature with at least a portion of the voice print to determine a similarity between the at least one characteristic feature and the at least a portion of the voice print; and determining whether the speaker is the user based, at least in part, on the similarity between the at least one characteristic feature and the at least a portion of the voice print. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A speaker verification system comprising:
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at least one computer readable storage medium storing at least one voice print, each obtained from characteristic features of at least one first voice signal obtained from a user uttering at least one enrollment utterance; a transmitter to provide a prompt to a speaker undergoing verification to utter at least is one challenge utterance having at least one word that was not in the at least one enrollment utterance; a receiver to receive at least one second voice signal of the speaker responding to the prompt; and at least one controller coupled to the memory, transmitter and receiver, the at least one controller configured to obtain at least one characteristic feature from the second voice signal, compare the at least one characteristic feature with at least a portion of the at least one voice print obtained from the user whose identity the speaker is asserting to determine a similarity between the at least one characteristic feature and the portion of the at least one voice print, and determine whether the speaker is the user based, at least in part, on the similarity between the at least one characteristic feature and the at least a portion of the at least one voice print. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification