Estimation of time delays between unknown colored signals

A number of papers have been dealing with the problem of estimating the di erential delay of an unknown signal impinging on two sensors Here the case of K sensors and L sources is considered with L K delays to be estimated The solution resorts to blind multichannel MA identi cation in the time domain All delays are estimated independently of each other using a relation between MA coe cients R esum e De nombreux articles traitent le probl eme de l estimation de temps de retards di erentiels avec un seul signal arrivant sur deux capteurs Ici K capteurs et L sources sont consid er es avec L K retards a estimer Les retards sont obtenus en identi ant un mod ele MA multi variable dans le domaine temporel Chaque retard est estim e ind ependamment gr ace aux relations entre les coe cients du mod ele MA