Noise matching for echo cancellers

Details Noise matching for echo cancellers Noise matching for echo cancellers

2002-11-25

2009-12-01

Jamal, Alexander (Department: 2614)

Telephonic communications

Echo cancellation or suppression

Combined diverse function

Reexamination Certificate

active

07627111

ABSTRACT:
An embodiment of the present invention includes an adaptive predictor, a system white noise generator, and a background noise estimator. The adaptive predictor estimates adaptive weights of autoregressive (AR) model of background noise as background samples in an echo canceler. The adaptive predictor generates adaptive error. The system white noise generator generates a white noise using the adaptive error. The noise background estimator estimates the background noise using the white noise and the estimated adaptive weights.

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