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Acoustic model creating method, acoustic model creating apparatus, acoustic model creating program, and speech recognition apparatus
Acoustic model creating method, acoustic model creating apparatus, acoustic model creating program, and speech recognition apparatus
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机译:声学模型创建方法,声学模型创建设备,声学模型创建程序和语音识别设备
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摘要
Exemplary embodiments of the present invention enhance the recognition ability by optimizing state numbers of respective HMM's. Exemplary embodiments provide a description length computing unit to find description lengths of respective syllable HMM's for which the number of states forming syllable HMM's is set to plural kinds of state numbers from a given value to the maximum state number, using the Minimum Description Length criterion, for each of syllable HMM's set to their respective state numbers. An HMM selecting unit selects an HMM having the state number with which the description length found by the description length computing device is a minimum. An HMM re-training unit re-trains the syllable HMM selected by the syllable HMM selecting unit with the use of training speech data.
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