A frequency-domain double-talk detector combined with the regularized GMDF adaptive filter

Adaptive filter and double-talk detector (DTD) are two essential parts in acoustic echo cancellation of hands-free communications. The generalized frequency-domain multidelay adaptive filter (GMDF) is an attractive choice due to its convergence properties and computational parsimony. Very recently we presented a robust time-domain DTD equipped with a near-end voice detector, a double-to-single talk detector and two auxiliary filters. In this paper, we expand the work of to introduce a frequency-domain DTD combined with the regularized GMDF adaptive filter. Extensive simulations demonstrated the proposed system was capable of differentiating echo path changes from double-talk situation, and performed better than other competitive schemes.