基于麦克风阵列的语音信号实时时延估计

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。

Speech Signal Localization Estimate Based on Microphone Array Using TDOA Algorithm

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...