Speaker-specific mapping for text-independent speaker recognition
Speech Communication
Pitch correlogram clustering for fast speaker identification
EURASIP Journal on Applied Signal Processing
Evaluation of a Noise-Robust Multi-Stream Speaker Verification Method Using F0 Information
IEICE - Transactions on Information and Systems
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We describe a method of updating a hidden Markov model (HMM) for speaker verification using a small amount of new data for each speaker. The HMM is updated by adapting the model parameters to the new data by maximum a posteriori (MAP) estimation. The initial values of the a priori parameters in MAP estimation are set using training speech used for first creating a speaker HMM. We also present a method of resetting the a priori threshold as the updating of the model proceeds. Evaluation of the performance of the two methods using 10 male speakers showed that the verification error rate was about 42% of that without updating.