| 利用上下文和基频提高汉语连续数字串识别性能 |
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| 引用本文： | 程雪林,吴开政,李宗葛. 利用上下文和基频提高汉语连续数字串识别性能[J]. 计算机工程与应用, 2003, 39(23): 84-86 |
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| 作者姓名： | 程雪林 吴开政 李宗葛 |
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| 作者单位： | 复旦大学计算机科学系,上海,200033 |
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| 摘 要： | 该文介绍了如何利用三音子模型和基频信息来提高汉语连续数字串的识别性能。三音子模型考虑了前后语音协同发音的影响,将上下文考虑到模型中去,可以更好地描述连续语音;各个音节的基频是随时间而变化的,其不同轨迹构成了声调,利用基频信息进一步提高了对汉语连续数字串的识别率。
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| 关 键 词： | 隐含马尔可夫模型 连续数字串 三音子 基频 |
| 文章编号： | 1002-8331-(2003)23-0084-03 |
| 修稿时间： | 2002-08-01 |
Improvement of Mandarin Connected Digits Recognition Using Context and Pitch Information |
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| Cheng Xuelin Wu Kaizheng Li Zongge. Improvement of Mandarin Connected Digits Recognition Using Context and Pitch Information[J]. Computer Engineering and Applications, 2003, 39(23): 84-86 |
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| Authors: | Cheng Xuelin Wu Kaizheng Li Zongge |
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| Abstract: | This paper introduces how to use the triphone models and pitch information to improve the performance of Mandarin connected digits.Triphone models consider the effects of coarticulation,contain the context in themselves and can better reflect the characteristics of natural speech.In Chinese the pitch of syllable varies with time ,whose track forms different tones.By using the pitch information the error rate of Mandarin connected digits is further decreased. |
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| Keywords: | Hidden Markov Model(HMM) Connected digits Triphone Pitch |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
