Speaker identifying apparatus and computer program product

Details Speaker identifying apparatus and computer program product Speaker identifying apparatus and computer program product

2006-09-27

2009-11-10

Vo, Huyen X. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S250000, C704S236000

Reexamination Certificate

active

07617102

ABSTRACT:
A speaker identifying apparatus includes: a module for performing a principal component analysis on predetermined vocal tract geometrical parameters of a plurality of speakers and calculating an average and principal component vectors representing speaker-dependent variation; a module for performing acoustic analysis on the speech data being uttered for each of the speakers to calculate cepstrum coefficients; a module for calculating principal component coefficients for approximating the vocal tract geometrical parameter of each of the plurality of speakers by a linear sum of principal component coefficients; a module for determining, by multiple regression analysis, a coefficient sequence for estimating principal component coefficients by a linear sum of the plurality of prescribed features, for each of the plurality of speakers; a module for calculating a plurality of features from speech data of the speaker to be identified, and estimating principal component coefficients for calculating the vocal tract geometrical parameter of the speaker to be identified, by a linear sum obtained by applying the coefficient sequence calculated by the regression analyzing module; and a module for identifying said speaker to be identified, by comparing the estimated principal component coefficients with the principal component coefficients calculated for each of the plurality of speakers by the principal component coefficient calculating module.

REFERENCES:
patent: 6697778 (2004-02-01), Kuhn et al.
patent: 2004-258845 (2004-09-01), None
“Speaker Verification Using Casual Factors of Speaker Characteristics”. P. Mokhtari et al. Poster Session of the ATR Research Exposition 2005, Kyoto, Japan Nov. 10-11, 2005.
“Speaker Discriminating Features of Vocal-Tract Shapes and Their Inversion from Acoustics”. P. Mokhtari et al. Proceedings of the 2006 Spring Meeting Acoustical Society of Japan, Tokyo, Japan, pp. 351-352, Mar. 14-16, 2006.
“Toward an Acoustic-Articulatory Model of Inter-Speaker Variability”. P. Mokhtari et al. Proceedings of the 6thInternational Conference on Spoken Language Processing (ICSLP 2000), Beijing, China, Oct. 16-20, 2000.
“Acoustic Characteristics of Phonetic and Speaker Variability in VT Area Functions”. P. Mokhtari et al. Proceedings of the 2005 Autumn Meeting Acoustical Society of Japan, Sendai, Japan, pp. 417-418, Sep. 27-29, 2005.
“Individual Variation of the Hypopharyngeal Cavities and Its Acoustic Effects”. T. Kitamura et al. Journal of the Acoustical Science and Technology, vol. 26, No. 1, pp. 16-26, Jan. 2005.

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