Method for identifying authorized users using a spectrogram and apparatus of the same
First Claim
1. A method for identifying an authorized user using a spectrogram includes the steps of:
- (i) detecting an end point of a speech after a user speaks;
(ii) extracting speech features from a spectrogram of the speech;
(iii) determining whether training is necessary, and, if so, taking the speech features as a reference template, setting a threshold and going back to (i), otherwise, proceeding to the next step;
(iv) matching patterns of the speech features and the reference template;
(v) computing a distance between the speech features and the reference template according to a matching result of (iv) to obtain a distance scoring;
(vi) comparing the distance scoring with the threshold;
(vii) determining whether the user is authorized according to a compared result of (vi).
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Abstract
A method for identifying authorized users and the apparatus of the same, which identifies users by comparison with specific spectrograms of authorized users. The method comprises the steps of: (i) detecting the end point of a verbalized sample from the user requesting access; (ii) retrieving speech features from a spectrogram of the speech; (iii) determining whether training is necessary, and if so, taking the speech features as a reference template, setting a threshold and going back to (i), otherwise going on to next step; (iv) matching patterns of the speech features and the reference template; (v) computing a distance between the speech features and the reference template according to the matching result of (iv) to obtain a distance scoring; (vi) comparing the distance scoring with the threshold; (vii) determining whether the user is authorized according to the compared result of (vi).
182 Citations
6 Claims
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1. A method for identifying an authorized user using a spectrogram includes the steps of:
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(i) detecting an end point of a speech after a user speaks;
(ii) extracting speech features from a spectrogram of the speech;
(iii) determining whether training is necessary, and, if so, taking the speech features as a reference template, setting a threshold and going back to (i), otherwise, proceeding to the next step;
(iv) matching patterns of the speech features and the reference template;
(v) computing a distance between the speech features and the reference template according to a matching result of (iv) to obtain a distance scoring;
(vi) comparing the distance scoring with the threshold;
(vii) determining whether the user is authorized according to a compared result of (vi). - View Dependent Claims (2, 3, 4, 5, 6)
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Specification