Hi, I have read the news about Speex 1.2rc1 is out: "This release adds support for acoustic echo cancellation with multiple microphones and multiple loudspeakers. It also adds an API to decorrelate loudspeaker signals to improve multi-channel performance...." I have to encode a 4 multichannels audio file. The single channel is not correlated with other. What kind of parameter I have to pass to speexenc? I can only use stereo mode? In stereo mode the channels must be correlated? Many thanks. Paolo.