REAL TIME SEPARATION OF CONVOLUTIVE MIXTURES

A new concept of combining conventional beamforming with independent component analysis (ICA) techniques and its implementation on a multi DSP system is presented. The system consists of two floating point digital signal processors TMS320C6701, an eight channel linear microphone array, an analog/digital converter board and a handheld control unit for stand alone operation. In the two system stages a sum and delay beamformer as well as a convolutive ICA algorithm are implemented. Due to the high performance of the digital signal processors, the systems achieves blind separation of two convolutive mixed sources in real time.

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