A novel framework of multi-channel acoustic echo cancellation

Conventionally, multi-channel acoustic echo cancellation (AEC) achieves the goal by estimating the impulse responses of the local room. However, generally, conventional AEC methods have no unique solutions. Due to the strong correlation of the input signals, conventional methods are with many disadvantages. To overcome this problems, a new framework is proposed in this paper based on SIMO (single input multiple output) blind deconvolution. Under the new framework, we achieve the goal by identifying the impulse responses of distant room and avoiding the disadvantages of the conventional methods. *Supported by National Natural Science foundation of China (Grand Nos. 60325310, 60505005), Guangdong Province Science Foundation for Program of Research Team (Grant No. 04205783), Guangdong Province Natural Science Foundation (Grant Nos. 05103553,05006508) and the Specialized Prophasic Basic Research Projects of Ministry of science and Technology, china (Grant No. 2005CCA04100)