基于维纳预测器的非同步测量数据同步化方法

Synchronization of non-synchronous measurement data based on Wiener predictor

基于最小均方差准则,推导了用于带参考传声器的非同步测量的维纳预测器表达式,提出了基于维纳预测器的带有参考传声器的传声器阵列非同步测量数据同步化处理方法。维纳预测器通过传递参考传声器与阵列之间的时空相关性,实现非同步测量数据同步化。分别通过仿真和实验将非同步测量结果和同步测量结果进行比较,验证了所提基于维纳预测器的非同步测量数据同步化方法的准确性和可靠性,同时也表明非同步测量方法可以提高阵列孔径和阵元密度。

A data synchronization method is proposed to synchronize the data in microphone array non-synchronous measurements by employing the Wiener predictor derived from the minimum mean square error criterion.The Wiener predictor synchronizes the asynchronous measurement signal by harnessing the spatio-temporal correlation between the reference microphones and the array.To validate the proposed data synchronization method,extensive simulations and experiments are conducted to compare the results of non-synchronous and synchronous measurements.Both the simulation results and the experimental results confirm that the proposed method using the Wiener predictor for non-synchronous measurements is robust and reliable.Meanwhile,the results show the non-synchronous measurement method has the advantage of improving array aperture and element density.