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Low-Complexity Network Echo Cancellation Approach for Systems Equipped With External Memory

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5 Author(s)
Magnus Berggren ; Dept. of Electr. Eng., Blekinge Inst. of Technol., Karlskrona, Sweden ; Markus Borgh ; Christian Schuldt ; Fredric Lindstrom
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Long delays and sparseness characterize impulse responses in telecommunication networks and a vast number of solutions for network echo cancellation have been proposed over the years. In this paper, an approach for detecting dispersive regions of a sparse impulse response and a proportionate normalized least mean square (PNLMS)-based selective updating approach are combined with an adaptive double-talk detector to form a complete solution for echo cancellation. The proposed solution has low computational complexity and is targeted for systems equipped with external memory.

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IEEE Transactions on Audio, Speech, and Language Processing  (Volume:19 ,  Issue: 8 )