Pop and click reduction using DAC power up and power down...

Details Pop and click reduction using DAC power up and power down... Pop and click reduction using DAC power up and power down...

2007-08-07

2007-08-07

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

With amplifier

C381S094500, C330S051000, C330S149000, C330S279000

Reexamination Certificate

active

10628827

ABSTRACT:
An audio amplifier generates an output to a load, in which a digital-to-analog converter drives the amplifier during powering up and powering down the amplifier. The digital-to-analog converter controls the amplifier to ramp the voltage at the output at a predetermined rate to reduce rapid voltage changes from being sent to the load during the powering up or powering down sequence.

REFERENCES:
patent: 5764005 (1998-06-01), Kobayashi
patent: 5796851 (1998-08-01), Hewitt et al.
patent: 6281821 (2001-08-01), Rhode et al.
patent: 6783073 (2004-08-01), Yahagi et al.

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