A frequency method for blind separation of an anechoic mixture

This paper presents a new frequency method for blind separation of mixtures of scaled and delayed versions of sources. This kind of problem can occur in air and underwater acoustics. By assuming the mutual independence of the sources, we make use of the power spectral densities and the cross power spectral densities of mixed data to estimate the sources, the mixing coefficients, and the relative delays between a reference sensor and the other sensors. Simulations on synthetic data of sound radiated by a ship show the effectiveness of the proposed method.