| 基于麦克风阵列的语音信号实时时延估计 |
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| 引用本文： | 王大中,李晓妮.基于麦克风阵列的语音信号实时时延估计[J].吉林大学学报(信息科学版),2009,27(2):133. |
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| 作者姓名： | 王大中 李晓妮 |
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| 作者单位： | 1. 谢菲尔德大学 电子与电力工程学院,英国 S10 2TN,2. 吉林大学 通信工程学院,长春 130025 |
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| 摘 要： | 为了更好地利用麦克风阵列定位语音信号，得到更高的定位精度，研究了时延估计算法的构成方法与性能特征，分析了定位过程中误差的产生原因与环境，提出了切实可行的减小或消除相应误差的办法。该算法利用同一语音信号分别到达各麦克风的时间差，进行关系换算。利用Matlab在电脑上仿真的定位结果表明，该修改方法能大大改善定位的准确性，提高时延估计算法在实际应用中的利用率。
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| 关 键 词： | 麦克风阵列 定位 语音信号 时延估计算法 误差 |
Speech Signal Localization Estimate Based on Microphone Array Using TDOA Algorithm |
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| WANG Da-zhong,LI Xiao-ni.Speech Signal Localization Estimate Based on Microphone Array Using TDOA Algorithm[J].Journal of Jilin University:Information Sci Ed,2009,27(2):133. |
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| Authors: | WANG Da-zhong LI Xiao-ni |
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| Institution: | 1. Department of Electronic and Electrical Engineering, Unversity of Sheffield|S10 2TN, UK;
2. College of Communication Engineering, Jilin University, Changchun 130025, China |
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| Abstract: | In order to use a microphone array to locate speech signals preferably and obtain higher positioning accuracy,the constructive method and performance characteristics of TDOA(Time-Delay of Arrival)algorithm are studied,reasons and environment of causing errors in locating processing are analyzed,and some methods that can reduce or eliminate the errors are proposed.Using the time-delays of signals from the same speech signal source between any two microphones in the array and the relationships within the time... |
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| Keywords: | microphone array locate speech signal time-delay of arrival(TDOA) algorithm error |
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