Speech communication apparatus equipped with echo canceller

Details Speech communication apparatus equipped with echo canceller Speech communication apparatus equipped with echo canceller

H - Electricity

04

M

H04M 3/18 (2006.01) H04M 1/20 (2006.01) H04M 9/08 (2006.01)

Patent

CA 2086522

A voice communication device provided with a chirp signal generating means and a training control means in addition to an echo canceler for canceling acoustic echoes senerated in a hand-free speech space. The chirp signal generation means gen- erates chirp signal suitable for training the echo canceler initially. The training control means makes the chirp signal generation means generate chirp signal and makes a hand-free speaker emit the shirp sound corresponding to the chirp signal when a prede- termined condition for starting a hand-free speech is satisfied. And further, trains the echo canceler initially according to the chirp sound.

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