Methods and apparatus for improving voice quality in an...

Details Methods and apparatus for improving voice quality in an... Methods and apparatus for improving voice quality in an...

2007-08-21

2007-08-21

Singh, Ramnandan (Department: 2614)

Telephonic communications

Substation or terminal circuitry

Noise suppression

C381S094800, C704S233000

Reexamination Certificate

active

10810996

ABSTRACT:
A method for improving a downlink signal received by a listener on a phone is disclosed. The method includes calculating an environment noise level of the listener and filtering and adjusting gain of the downlink signal based on the environment noise level.

REFERENCES:
patent: 4630305 (1986-12-01), Borth et al.
patent: 5329243 (1994-07-01), Tay
patent: 5524148 (1996-06-01), Allen et al.
patent: 6236725 (2001-05-01), Takada et al.
patent: 6351532 (2002-02-01), Takada et al.
patent: 6591234 (2003-07-01), Chandran et al.
patent: 2004/0101038 (2004-05-01), Etter
patent: 2005/0004796 (2005-01-01), Trump et al.
patent: 2005/0264332 (2005-12-01), Chen et al.
patent: 0 977 355 (2000-02-01), None
Heitkamper et al, “Adaptive Gain Control for Speech Quality Improvement and Echo Suppression”, 1993, ISCAS'93, IEEE Int. Symp. on Circuits and Systems, May 3-6, 1993, pp. 455-458.
Musch, Hannes, Sound ID Adaptive Noise Compensation, http://www.soundid.com/Modules/Technology/WP3ANC.pdf, pp. 1-6, Sound ID.
Jian, Zhongping, Adaptive Noise Cancellation, ELEC 434 Project Report, http://www-ece.rice.edu/˜klwang/elec434/elec434.htm, Dec. 15, 2002, pp. 1-7, Rice University Dept. of ECE.

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