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高性能汉语数码串快速识别算法的研究 被引量：5

EFFICIENT ALGORITHMS FOR HIGH PERFORMANCE MANDARIN CONNECTED DIGIT SPEECH RECOGNITION
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摘要 为了提高非特定人汉语数码串连续语音识别系统的识别速度 ,对系统进行了细致的研究 ,有针对性地提出了一种新的快速识别算法 .通过对隐含马尔可夫模型输出概率密度函数运算的简化 ,以及采用结合段长信息的束搜索剪枝算法 ,在保证识别精度的情况下 ,使识别系统对不定长数码串平均识别时间从 0 .92 s减少为 0 .11s,而串识别正确率仅从 94.3%下降到 94.0 % 。 In this paper, a new efficient recognition algorithm is proposed based on speaker independent mandarin connected digit speech recognition system to enhance the integrated performance of this system. The average time of the unknown length connected digit recognition decreases from 0.92 second to 0.11 second and the recognition accuracy just degrades from 94 3% to 94 0% by simplifying observation probability computation of hidden Markov model and adopting improved beam search pruning algorithm combined with duration information.
作者 朱璇 李虎生 刘加 刘润生
机构地区 清华大学电子工程系
出处 《计算机研究与发展》 EI CSCD 北大核心 2001年第7期845-850,共6页 Journal of Computer Research and Development
基金 国家自然科学基金 (6 9975 0 0 7) 国家"八六三"高技术研究发展计划基金项目 (86 3-30 6 ZD13-0 4-6 )资助
关键词 汉语数码串 语音识别 算法 语音库 隐含马尔可夫模型 mandarin connected digit, speech recognition, beam search
分类号 TN912.34 [电子电信—通信与信息系统]
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共引文献21

同被引文献21

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引证文献5

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计算机研究与发展
2001年 第7期

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