Acoustic echo cancellation and noise reduction in the frequency-domain: A global optimisation

The design of an efficient and robust hands-free system is now required by the growth of mobile radio and teleconference communications. The use of Frequency-Domain Adaptive Filters in the context of acoustic echo cancellation has been extensively studied in the literature. These algorithms are well-suited for long impulse response modeling and for correlated input signals like speech. A global optimisation of a frequency-domain acoustic echo cancellation algorithm with noise reduction is presented in this paper. This optimisation leads to both reduced complexity and improved performances when compared to classical cascaded structures.