| 车载环境下基于样本熵的语音端点检测方法 |
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| 引用本文： | 赵欢,王纲金,胡炼,彭秀娟. 车载环境下基于样本熵的语音端点检测方法[J]. 计算机研究与发展, 2011, 48(3) |
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| 作者姓名： | 赵欢 王纲金 胡炼 彭秀娟 |
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| 作者单位： | 湖南大学计算机与通信学院,长沙,410082 |
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| 基金项目： | 湖南省自然科学基金重点项目，湖南省科技计划重点基金项目 |
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| 摘 要： | 在语音处理中一个关键性问题是如何准确找到语音的起止位置,目前提出许多的语音端点检测算法不能得到理想的检测结果.由于样本熵是近似熵的改进算法,提出车载环境下基于样本熵的语音端点检测方法.并采用模糊C均值聚类算法和贝叶斯信息判决算法进行样本熵特征门限估计,以及使用双门限法进行语音端点检测.在TIMIT连续语音库上的实验表明,车载噪声环境下,样本熵法和近似熵法的检测正确率均远高于谱熵法和能量谱熵法,而样本熵法相对于近似熵法具有更好的检测效果,特别是当信噪比小于等于OdB时,样本熵法的检测性能优于近似熵法近10%.因此,样本熵法在车栽智能语音领域具有很好的应用前景,能够为车载导航提供准确的语音端点检测技术.
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| 关 键 词： | 语音处理 语音端点检测 样本熵 近似熵 谱熵 能量谱熵 |
Voice Activity Detection Based on Sample Entropy in Car Environments |
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| Zhao Huan,Wang Gangjin,Hu Lian,Peng Xiujuan. Voice Activity Detection Based on Sample Entropy in Car Environments[J]. Journal of Computer Research and Development, 2011, 48(3) |
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| Authors: | Zhao Huan Wang Gangjin Hu Lian Peng Xiujuan |
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| Affiliation: | Zhao Huan,Wang Gangjin,Hu Lian,and Peng Xiujuan(School of Computer and Communication,Hunan University,Changsha 410082) |
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| Abstract: | One of the key issues in practical speech processing is to precisely locate endpoints of the input utterance to be free of non-speech regions.Although lots of studies have been performed to solve this problem,the operation of existing voice activity detection(VAD)algorithms is still far away from ideal.This paper proposes a robust feature for VAD method in car environments based on sample entropy(SampEn)which is an improved algorithm of approximate entropy(ApEn).In addition,we adopt fuzzy C means clustering... |
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| Keywords: | speech processing voice activity detection sample entropy approximate entropy spectral entropy energy spectral entropy |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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