Multipath delay estimation for acoustic echo channel

A new algorithm for multipath delay estimation based upon autocorrelation estimator (AE) has been proposed. The existing generalized autocorrelation estimator (GAE) has been modified by passing it through a sliding window of suitable shape and size resulting in improvement in performance. The performance improvement obtained because of the window has been determined for the case when the input is a filtered version of a white Gaussian signal. Accuracy percentage (AP) has been plotted against SNR. Simulation results show that the proposed scheme performs better delay estimation even at relatively low SNR