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Acoustic echo cancellers commonly implement linear filters that have to identify as close as possible the impulse response of the acoustic echo path system. However such a system is highly nonlinear, and thus it is reasonable to suppose that a better system identification could be achieved by a nonlinear filter. Volterra filters are well suited for modelling that system but they need in general too...
Motion estimation is a fundamental step for high quality, low bandwidth video compression. Recently the MPEG-4 group has proposed some low complexity algorithms. They have almost the same performance in term of PSNR of the Full Search algorithm, but at the same time the complexity is dramatically reduced. However it is difficult to realize these algorithms with conventional hardware structures. For...
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