Method and apparatus for applying echo mitigation in a communica

Details Method and apparatus for applying echo mitigation in a communica Method and apparatus for applying echo mitigation in a communica

1997-02-03

1999-06-08

Cangialosi, Salvatore

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

379410, H04B 320

Patent

active

059111240

ABSTRACT:
A communication device (200) includes apparatus (210) that selectively applies echo cancellation in the processing of an audio signal (207). The audio signal is processed for echo cancellation, and a modified audio signal obtained (410, 420, 430). The energy content of the modified audio signal is compared (440, 450) with that of the original audio signal. When the energy content of the modified audio signal exceeds that of the original audio signal, the unmodified audio signal is selected instead of the modified audio signal for further processing (450, 460, 470).

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