Method and apparatus for minimizing far-end speech effects...

Details Method and apparatus for minimizing far-end speech effects... Method and apparatus for minimizing far-end speech effects...

H - Electricity

04

M

H04M 1/60 (2006.01) H04B 3/23 (2006.01) H04M 1/20 (2006.01) H04M 3/56 (2006.01) H04N 7/15 (2006.01) H04R 1/40 (2006.01)

Patent

CA 2445180

A far-end activity detector for use in a hands-free telephone incorporating a beamformer, comprising a pair of accumulators for storing respective samples of a near-end signal and a far-end signal received by the hands-free telephone, a pair of modules for calculating the acoustic energies of the respective samples of the near-end signal and the far-end signal, and a comparator for comparing the acoustic energies and in the event the far-end acoustic energy exceeds the near-end acoustic energy by more than said predetermined amount then freezing operation of the steering functionality of the beamformer.

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