System and method facilitating acoustic echo cancellation...

Details System and method facilitating acoustic echo cancellation... System and method facilitating acoustic echo cancellation...

2006-12-26

2006-12-26

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Dereverberators

C381S071110, C381S071140, C370S286000, C370S289000, C370S290000, C379S406010, C379S406080, C379S406120

Reexamination Certificate

active

07155018

ABSTRACT:
A system and method facilitating acoustic echo cancellation convergence detection is provided. The invention includes an acoustic echo cancellation convergence detector having a center clipping component, a convergence calculator, a convergence filter and a convergence statistic component. The invention provides for the acoustic echo cancellation convergence detector to provide an output regarding convergence of an adaptive filter based, at least in part, upon a filtered convergence statistic. Optionally, the acoustic echo cancellation convergence detector can provide an output associated with convergence history.

REFERENCES:
patent: 5828756 (1998-10-01), Benesty et al.
patent: 6963649 (2005-11-01), Vaudrey et al.
patent: 2002/0160733 (2002-10-01), Kajita
V. Fischer, et al. “A Software Stereo Acoustic Echo Canceler For Microsoft Windows”, p. 1-14.

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