Method for determining a set of filter coefficients for an acoustic echo compensation means

摘要

The invention provides a method for determining a set of filter coefficients for an acoustic echo compensation means in a beamformer arrangement, wherein the beamformer arrangement comprises a microphone array comprising at least two microphones, a beamformer yielding a beamformed signal based on microphone signals from each of the at least two microphones and an acoustic echo compensation means operating on the beamformed signal for echo compensation of the beamformed signal, the method comprising:
providing a plurality of sets of filter coefficients for the acoustic echo compensation means, each set of filter coefficients corresponding to one of a predetermined number of steering directions of the beamformer arrangement, wherein the predetermined number of steering directions is equal to or greater than the number of microphones in the microphone array; and
for a current steering direction, determining a current set of filter coefficients for the acoustic echo compensation means based on the provided sets of filter coefficients.