초록 ▼

A method and apparatus for securing access to a service or facility employing automatic speech recognition, text-independent speaker identification, natural language understanding techniques and additional dynamic and static features. The method includes the steps of receiving and decoding speech co

A method and apparatus for securing access to a service or facility employing automatic speech recognition, text-independent speaker identification, natural language understanding techniques and additional dynamic and static features. The method includes the steps of receiving and decoding speech containing indicia of the speaker such as a name, address or customer number; accessing a database containing information on candidate speakers; questioning the speaker based on the information; receiving, decoding and verifying an answer to the question; obtaining a voice sample of the speaker and verifying the voice sample against a model; generating a score based on the answer and the voice sample; and granting access if the score is equal to or greater than a threshold. Alternatively, the method includes the steps of receiving and decoding speech containing indicia of the speaker; generating a sub-list of speaker candidates having indicia substantially matching the speaker; activating databases containing information about the speaker candidates in the sub-list; performing voice classification analysis; eliminating speaker candidates based on the voice classification analysis; questioning the speaker regarding the information; eliminating speaker candidates based on the answer; and iteratively repeating prior steps until one speaker candidate (in which case the speaker is granted access), or no speaker candidate remains (in which case the speaker is not granted access).

대표청구항 ▼

[ What is claimed is:] [1.] A method of controlling access of a speaker to one of a service and a facility, the method comprising the steps of:(a) receiving first spoken utterances of the speaker, the first spoken utterances containing indicia of the speaker;(b) decoding the first spoken utterances;

[ What is claimed is:] [1.] A method of controlling access of a speaker to one of a service and a facility, the method comprising the steps of:(a) receiving first spoken utterances of the speaker, the first spoken utterances containing indicia of the speaker;(b) decoding the first spoken utterances;(c) accessing a database corresponding to the decoded first spoken utterances, the database containing information attributable to a speaker candidate having indicia substantially similar to the speaker;(d) querying the speaker with at least one question based on the information contained in the accessed database;(e) receiving second spoken utterances of the speaker, the second spoken utterances being representative of at least one answer to the at least one question;(f) decoding the second spoken utterances;(g) verifying the accuracy of the decoded answer against the information contained in the accessed database serving as the basis for the question;(h) taking a voice sample from the utterances of the speaker and processing the voice sample against an acoustic model attributable to the speaker candidate without requiring dependency on the decoded first and second spoken utterances;(i) generating a score corresponding to the accuracy of the decoded answer and the closeness of the match between the voice sample and the model; and(j) comparing the score to a predetermined threshold value and if the score is one of substantially equivalent to and above the threshold value, then permitting speaker access to one of the service and the facility.