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- W2012100713 abstract "In this paper, we propose a novel acoustic modeling framework, synchronous HMM, which takes full advantage of the capacity of the heterogeneous data sources and achieves an optimal balance between modeling accuracy and robustness. The synchronous HMM introduces an additional layer of substates between the HMM states and the Gaussian component variables. The substates have the capability to register long-span non-phonetic attributes, which are integrally called speech scenes in this study. The hierarchical modeling scheme allows an accurate description of probability distribution of speech units in different speech scenes. To address the data sparsity problem, a decision-based clustering algorithm is presented to determine the set of speech scenes and to tie the substate parameters. Moreover, we propose the multiplex Viterbi algorithm to efficiently decode the synchronous HMMs within a search space of the same size as for the standard HMMs. The experiments on the Aurora 2 task show that the synchronous HMMs produce a significant improvement in recognition performance over the HMM baseline at the expense of a moderate increase in the memory requirement and computational complexity." @default.
- W2012100713 created "2016-06-24" @default.
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- W2012100713 date "2013-05-01" @default.
- W2012100713 modified "2023-09-26" @default.
- W2012100713 title "Modeling heterogeneous data sources for speech recognition using synchronous hidden Markov models" @default.
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- W2012100713 doi "https://doi.org/10.1109/icassp.2013.6639101" @default.
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