Time delay estimates based on multiple linear predictions
Jia Liu · Journal of Tsinghua University(Science and Technology) · 2011
Most time delay estimation methods using microphone arrays suffer from degradation in noisy,reverberating environments.A multiple linear prediction(MLP) algorithm was developed using transfer function ratio estimates to eliminate the asymmetry between different channels as well as correlate the signals more.Spatial prediction using redundant information from the microphone arrays treats the correlation coefficient matrix as the objective function to improve the estimation reliability.Tests show that the algorithm is more accurate and robust.The estimation accuracy is more than 5% better than classic methods in noisy environment and 30% better in reverberating environments.