Processing of stereo microphone signals for teleconferencing

Methods and devices for improving the intelligibility of audio in a teleconferencing unit. Multiple microphones (112, 114, 116, 111, 113, 115) and multiple audio channels are used, in which only the best microphones are selected to represent each audio channel. Multiple microphones signals may be mixed according to microphones' positions in a room to form a single signal to represent one audio channel. The audio signal may be further processed to effectuate other features.