Two-dimensional modified DFT pair and its application to frequency domain adaptive filter

摘要

It is well known that a frequency domain adaptive filter (FDAF) converges faster than a time domain adaptive filter (TDAF) even when an input signal is colored as a speech. We have proposed the FDAF using the modified DFT pair (MDFTP), of which realization and effectiveness have been confirmed through the computer simulations. In this paper, we introduce the two-dimensional MDFTP and apply it to the two-dimensional FDAF. The effectiveness on the convergence acceleration is confirmed through the computer simulation in the two-dimensional adaptive line enhancer.