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Step size and tap length play critical roles in balancing the complexity and steady-state performance of an adaptive filter. For an impulse response with an exponential power decay profile, which models a wide range of practical systems, such as an acoustic echo path, this paper proposes a new variable step-size and tap-length least mean square (LMS) algorithm. In each iteration, the optimal step-size...
A reliable double-talk detector (DTD) is often a necessary requirement for acoustic echo cancellers (AECs). Various techniques have been proposed in the literature to detect double-talk for AEC systems. In those DTD algorithms, the acoustic echo path is assumed to be linear. On the other hand, nonlinear AEC is necessary when the system components such as loudspeakers exhibit nonlinearities. In this...
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