Robust DTW-based recognition algorithm for hand-held consumer devices
IEEE Transactions on Consumer Electronics2005Vol. 51(2), pp. 699–709
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Abstract
This paper presents a new robust dynamic programming (DP)-based recognition algorithm that is quite suitable for menu-driven recognition applications with small vocabulary size (typically less than 50). When compared to the conventional dynamic time warping (DTW)-based recognizer, the proposed algorithm shows significantly improved recognition accuracy in speaker-independent cases. In addition, when compared to the conventional hidden Markov model (HMM)-based recognizer, the proposed algorithm requires smaller computational amount and parameter file size, while maintaining almost the same recognition rate for command recognition applications with small vocabulary size in hand-held consumer devices.
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