Noise suppression circuit for mobile phone

Details Noise suppression circuit for mobile phone Noise suppression circuit for mobile phone

2011-04-12

2011-04-12

Anderson, Matthew D. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S570000, C455S310000, C455S063100, C704S226000

Reexamination Certificate

active

07925237

ABSTRACT:
A noise suppression circuit and method for a mobile phone is disclosed that includes a codec for decoding a received audio signal; a speaker for reproducing the audio signal; and a low-pass filter, which includes: a resistor; and a varactor and a capacitor connected in parallel to ground. Characteristics of the low-pass filter are adjusted according to usage conditions, thereby effectively suppressing a white noise and popup noise during an ongoing call.

REFERENCES:
patent: 6144937 (2000-11-01), Ali
patent: 2004/0196984 (2004-10-01), Dame et al.
patent: 2005/0195991 (2005-09-01), Wang et al.
patent: 2006/0100868 (2006-05-01), Hetherington et al.
patent: 2006/0178119 (2006-08-01), Jarvinen
patent: 2006/0255874 (2006-11-01), Okazaki et al.
patent: 2006/0285700 (2006-12-01), Felder et al.
patent: 2008/0095383 (2008-04-01), Pan et al.
patent: 2009/0010457 (2009-01-01), Munenaga et al.
patent: 01-176104 (1989-07-01), None

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