In this paper a symmetric feedback implementation scheme of a two microphones speech enhancement is presented. We consider the coupling systems modeled as a linear time-invariant Finite Impulse Response (FIR) filters and propose a new recursive-based adaptive filter solution to enhance the noisy speech. The optimum filter weight adaptation is based on a Double Affine Projection Algorithm (DAPA). This approach can be extended for a subclass of signal separations where the direct link is stronger than the interference link in the both channels. A comparative study with other adaptive algorithms shows the superiority of the DAPA in performances improvement.
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