Optimization of Phoneme-Based VQ Codebook in a DHMM System

A phoneme-based Gaussian mixture VQ codebook can improve the conventional DHMM system performance signiicantly. In this paper, an optimization method for the phoneme-based VQ codebook is proposed. The experimental results shown that the optimized phoneme-based VQ codebook leads to both the improvement of system performance and the reduction of system complexity.

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