Loudspeaker control circuit

Details Loudspeaker control circuit Loudspeaker control circuit

2006-08-15

2006-08-15

Wamsley, Patrick (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C381S111000

Reexamination Certificate

active

07091893

ABSTRACT:
A loudspeaker control circuit includes a bit splitter, a complement module and a digital-to-analog converter. The bit splitter divides a data item representing an acoustic signal into a high order bit group and a low order bit group. The complement module determines a complement of at least one of the high order bit group and the low order bit group. The complement module may be connected in series to the digital-to-analog converter. The digital-to-analog converter converts the high order bit group and the low order bit group from a digital format to an analog format.

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Amar Palacherla, “Using PWM to Generate Analog Output”, 4pp., Microchip Technology, Inc., 1997, no month.
Dennis Bohn, “Digital Dharma of Audio A/D Converters”, 10pp., RaneNote 137, Rane Corporation, 1997, no month.

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