Comparative Study of Various Time Delay Estimation Schemes using Matlab

The time delay between a signal and its received echo is a useful parameter. Acoustic Source Localization, Speech Recognition and its enhancement are some of the applications of TDE Methods. There are various methods to implement in MATLAB for time delay estimation. The reason for choosing the MATLAB as the analysis and simulation tool is that it has more flexible choices to support the simulation and is easy to do modification or data recording. The various TDE methods are Cross-Correlation (CC) method and Phase Transform (PHAT) methods falling under the Generalized Cross-Correlation Method and the Average Square Difference Function (ASDF). Various TDE methods are compared through simulations and measurements. Their simulation results are compared in terms of computation complexity, hardware implementation, precision and accuracy.