J4 ›› 2009, Vol. 27 ›› Issue (02): 133-.

• 论文 • 上一篇    下一篇

基于麦克风阵列的语音信号实时时延估计

王大中1|李晓妮2
  

  1. 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
  • 出版日期:2009-03-20 发布日期:2009-07-06
  • 通讯作者: 王大中(1984— ),男,吉林省吉林市人,英国谢菲尔德大学硕士研究生,主要从事数据通信研究 E-mail:felix8438@163.com
  • 作者简介:王大中(1984— )|男|吉林省吉林市人|英国谢菲尔德大学硕士研究生|主要从事数据通信研究|(Tel)86-15948080214(E-mail)felix8438@163.com

Speech Signal Localization Estimate Based on Microphone Array Using TDOA Algorithm

WANG Da-zhong1|LI Xiao-ni2   

  1. 1. Department of Electronic and Electrical Engineering, Unversity of Sheffield|S10 2TN, UK; 2. College of Communication Engineering, Jilin University, Changchun 130025, China
  • Online:2009-03-20 Published:2009-07-06

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。

关键词: 麦克风阵列, 定位, 语音信号, 时延估计算法, 误差

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-delays, the locating results can be simulated on computers. The solutions proposed can improve the locating accuracy greatly and increase the utilization rate of the TDOA algorithm in practical application.

Key words: microphone array, locate, speech signal, time-delay of arrival(TDOA) algorithm, error

中图分类号: 

  • TN912.3