A double talk detector based on the partial coherence function

The growth of mobile radio and teleconference communications requires the design of efficient and robust hands-free systems. In this context, optimisation of acoustic echo and noise reduction is needed. This operation often requires double talk detection, either to choose between different structures or to stop the adaptation of the acoustic echo canceller. In this paper, two microphones and one loudspeaker are considered and a double talk detector based on the partial coherence is investigated. Results are presented on simulated and real signals.