Method and system for reducing pop noise of a sound...

Details Method and system for reducing pop noise of a sound... Method and system for reducing pop noise of a sound...

2006-08-15

2006-08-15

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Noise or distortion suppression

Soft switching, muting, or noise gating

C381S123000, C381S094100, C381S120000, C330S261000, C330S296000, C330S051000, C330S285000

Reexamination Certificate

active

07092534

ABSTRACT:
A method and system are disclosed for controlling pop noises in a sound broadcasting system. After controllably connecting an output of a drive amplifier to a first predetermined low voltage level through a first switch, a first portion of an operation control data set is input to a digital-to-analog converter (DAC) circuit for driving an output thereof to a second predetermined low voltage level, and a second portion of the operation control data set is also input to the DAC circuit and further to the drive amplifier to bring the output of the drive amplifier to a common mode voltage level over a predetermined rise-up time period for controlling the pop noises.

REFERENCES:
patent: 6157726 (2000-12-01), Carroll et al.
patent: 6600365 (2003-07-01), Frith
patent: 2005/0025322 (2005-02-01), Henson et al.

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