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Speaker Verification

Speaker Verification. Detection & Estimation Of Missing Feature. A. Yanagawa. To verify a person by using our voice. Verify. This is Mr. xxxxx. Introduction. Speaker Verification. Introduction. There are two types of Speaker Verification. Text dependent SV. Text independent SV.

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Speaker Verification

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  1. Speaker Verification Detection & Estimation Of Missing Feature A. Yanagawa E6820

  2. To verify a person by using our voice Verify This is Mr. xxxxx Introduction • Speaker Verification E6820

  3. Introduction • There are two types of Speaker Verification Text dependent SV. Text independent SV. • Using Specific words • Using Unspecific words Wide applications! Open sesame! E6820

  4. Security(Biometrics) • Criminal Investigation Application E6820

  5. Filter Bank(Mel,Bark) How to verify Speaker • There are some features, and some classifiers… Features Classifiers • Vector quantization • HMMs • Neural Networks • GMM • Spectral Vectors • LPC (coef) Vectors • Cepstrum Vectors E6820

  6. Filter Bank(Mel,Bark) • DFT • Spectral Vectors Feature Vector Speaker model ……… GMM(Trained) Performance suffers from background noise…… Missing Parts E6820

  7. Clear Voice Voice w/ Noise (Trained data) (Present data) Estimation For robust speaker verification Best Performance[3] • Marginal Distribution • Spectral Subtraction • MMSE • SS-MFCCs Etc….. Missing Parts E6820

  8. One of estimators Problems of Marginal Distribution Expensive! To reduce computational expensive I aim in this project… • Making restriction • Making coarse data • Using other models • Using other features Etc….. By making a simulator (MATLAB?) E6820

  9. References [1] El-Maliki, Mounir / Drygajlo, Andrzej (1999): "Missing features detection and handling for robust speaker verification", In EUROSPEECH'99, 975-978. [2] J.P Campbell, “Speaker Recognition: A Tutorial”, Proceedings of the IEEE, vol 85, No 9, September 1999 [3]Drygajlo, Andrzej / El-Maliki, Mounir (2001): "Integration and imputation methods for unreliable feature compensation in GMM based speaker verification", In ODYSSEY-2001, 107-112. [4] Frédéric Bimbot, et al. “A Tutorial on Text-Independent Speaker Verification”, Journal on Applied Signal Processing, 2004. E6820

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