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- W1566883440 abstract "The accuracy of the acoustic models in large vocabulary recognition systems can be improved by increasing the resolution in the acoustic feature space. This can be obtained by increasing the number of Gaussian densities in the models by splitting of the Gaussians. This paper proposes a novel algorithm for this splitting operation. It is based on the phonetic decision tree used for the state tying in context dependent modelling. The advantage of the method is that it improves the capability of the acoustic models to discriminate between the different tied states. The proposed splitting algorithm was evaluated on the Wall Street Journal recognition task. Comparison with a commonly used splitting algorithm clearly shows that our method can provide smaller (thus faster) acoustic models and results in lower error rates." @default.
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- W1566883440 date "2002-11-07" @default.
- W1566883440 modified "2023-09-24" @default.
- W1566883440 title "Discriminative resolution enhancement in acoustic modelling" @default.
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- W1566883440 doi "https://doi.org/10.1109/icassp.2000.861801" @default.
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