Patent ID: 9424846
Filing Date: 2016-08-23
CPC Classification: G10L

Claim Text:
1. A computer-implemented method, comprising: providing a speaker identification verification phrase; obtaining audio data representing a candidate user speaking the speaker identification verification phrase; obtaining, for each of multiple subwords associated with the speaker identification phrase, sample acoustic features that are derived from the audio data representing the candidate user speaking the speaker identification verification phrase; obtaining, for each of the multiple subwords associated with the speaker identification verification phrase, reference acoustic features that (i) are stored in a collection of acoustic features for a target user, and (ii) are derived from audio data of the target user speaking one or more words that include the subword; determining, for each of the multiple subwords associated with the speaker identification verification phrase, that the sample acoustic features are associated with the reference acoustic features; in response to determining that the sample acoustic features are associated with the reference acoustic features, identifying the candidate user as the target user; obtaining, for each of one or more other subwords associated with the speaker identification verification phrase, other acoustic features that (i) are not already stored in the collection of acoustic features for the target user, and (ii) are derived from the audio data representing the candidate user speaking the speaker identification verification phrase; in response to identifying the candidate user as the target user, storing one or more of the other acoustic features in the collection of acoustic features for the target user; and using at least one of the one or more other acoustic features stored in the collection of acoustic features for the target user to verify an identity of a user speaking a subsequent utterance that includes one or more subwords that correspond to the at least one of the one or more of the other acoustic features stored in the collection of acoustic features for the target user.