Mukund Padmanabhan, Satya Dharanipragada
IEEE Transactions on Speech and Audio Processing
This paper describes a robust feature extraction method for continuous speech recognition. Central to the method is the Minimum Variance Distortionless Response (MVDR) method of spectrum estimation and a feature trajectory smoothing technique for reducing the variance in the feature vectors. The above method, when evaluated on continuous speech recognition tasks in a stationary and moving car, gave an average relative improvement in WER of greater than 30%.
Mukund Padmanabhan, Satya Dharanipragada
IEEE Transactions on Speech and Audio Processing
Mahesh Viswanathan, Homayoon S.M. Beigi, et al.
IJDAR
Satya Dharanipragada, Salim Roukos
IEEE Transactions on Speech and Audio Processing
Satya Dharanipragada, Karthik Visweswariah
IEEE Transactions on Audio, Speech and Language Processing