Performance of time-delay estimation in the presence of room reverberation

In this correspondence, synthetic microphone signals generated with the image model technique are used to study the eeects of room reverberation on the performance of the maximum likelihood (ML) estimator of the time delay, in which the estimate is obtained by maximizing the cross-correlation between ltered versions of the microphone signals. The results underscore the adverse eeects of reverberation on the bias, variance and probability of anomaly of the ML estimator. Explanations of these eeects are provided.