Noise suppression system

Communications – electrical: acoustic wave systems and devices – Distance or direction finding – By combining or comparing signals

Reexamination Certificate

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Details

C367S118000, C367S901000

Reexamination Certificate

active

07319640

ABSTRACT:
A method and apparatus is provided for suppressing noise which includes receiving a plurality of signals from an array of sensors and transforming each of these signals to the frequency domain. The transformed signals are beamformed so that noise sources can be identified by bearing and frequency range. A planewave-fit noise-suppression routine is then used to remove identified noise sources from the transformed signals and to provide a noise-suppressed transformed signal having signals from said identified noise sources suppressed.

REFERENCES:
patent: 5216640 (1993-06-01), Donald et al.
patent: 5481505 (1996-01-01), Donald et al.
patent: 5914912 (1999-06-01), Yang
patent: 6980486 (2005-12-01), Kneipfer et al.

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