Examining the effects of room response in oversampled, subband acoustic echo cancelers

We examine the effects of the room response on the convergence of oversampled, subband acoustic echo cancelers. Specifically, we have observed that spectral features of the room response such as peaks or nulls have definite and measurable effects an the convergence of the subband MSE which in turn has an effect on the reconstructed MSE. These effects can be traced back to slow converging spectral components located at the analysis filter band edge.