Algoritmo para o fator de esquecimento do método cepstral de cancelamento de realimentação acústica

This work proposes an improvement in the acoustic feedback cancellation method based on the cepstrum of the error signal. This improvement consists of an algorithm to transform the forgetting factor, parameter that controls the trade-off between robustness to short-burst disturbances and tracking rate of the adaptive filter, into time-varying. Simulations showed that this algorithm makes the method present a better trade-off between (re-)convergence speed and misalignment limit, generally increasing the stability margin of the sound reinforcement system.