You are here

Multi-channel echo cancelation

Multi-channel acoustic echo cancellation (MCAEC) has the goal to address coupling between loudpeakers and microphones in order to cancel, or considerably reduce, known contributions at each microphone. Main applications of these techniques regard audio/video conferencing, hands-free speech communication, and distant-speech interaction. In the latter case, one can aim to suppress either the voice prompts propagated in the environment or known audio propagated in the enviromment (e.g. TV and radio).

Related keywords: adaptive filtering, double-talk detection, semi-blind source separation, echo path estimation and modeling, barge-in for distant speech interaction, known background audio suppression, audio-conferencing.