Teleconference hands free communication echo attenuation having multisensor/sound pick up and output signals complex weighting factors subjected maximising low frequency/near field constraints.

摘要

The echo attenuating method has a multisensor (11m) sound pick up device (8) forming an antenna and a sound reproduction device (12). The sensor output signals are subjected to complex weighting functions, calculated by maximising constraints at low frequencies and in the near field of the directivity factor.