Background noise reduction system

Details Background noise reduction system Background noise reduction system

2011-04-19

2011-04-19

Azad, Abul (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S216000, C381S071200

Reexamination Certificate

active

07930175

ABSTRACT:
A noise reduction system includes a microphone configured to detect an acoustic signal. A first digitizer converts an output of the microphone into a discrete output signal. An acoustic sensor detects structure-borne noise, and a second digitizer converts an output of the acoustic sensor into a discrete acoustic noise reference signal. A noise compensation circuit processes the discrete output signal based on the discrete acoustic noise reference signal.

REFERENCES:
patent: 5848163 (1998-12-01), Gopalakrishnan et al.
patent: 0 411 360 (1991-02-01), None
patent: 0411360 (1991-02-01), None
patent: WO 00/14731 (2000-03-01), None
patent: WO 03/017718 (2003-02-01), None
Japanese Publication By Ichikawa; IEICE Trans. Fundamentals, vol. E88-. No. 7 Jul. 2005.

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