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Practically Efficient Nonlinear Acoustic Echo Cancellers Using Cascaded Block RLS and FLMS Adaptive Filters

Proc. ICASSP (2017), pp. 596-600


This paper presents a practically efficient implementation for nonlinear acoustic echo cancellation (NAEC). The echo path is modeled by a novel hybrid Taylor-Volterra pre-processor followed by a linear FIR filter. A cascaded block RLS and unconstrained FLMS adaptive algorithm is developed to jointly identify the pre-processor and the FIR filter. This implementation is validated via simulations.

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