Array Acoustic Time Delay Estimation Based on Generalized Cross Correlation
Jie Meng · Audio Engineering · 2010
For multi-channel array acoustic signal time delay estimation,an average generalized cross correlation algorithm is presented.In this algorithm,the PHAT-GCC(PHAse Transform Generalized Cross Correlation) for adjacent channels is calculated.Then the multiple PHAT-GCCs are averaged.Finally,the time delay is estimated according to the peak position of the average generalized cross correlation.Experiments show that the algorithm makes full use of the information of multiple channels and outperforms the traditional cross correlation algorithm.