Audio codec, digital device and voice processing method

Details Audio codec, digital device and voice processing method Audio codec, digital device and voice processing method

2008-07-29

2009-11-17

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000

Reexamination Certificate

active

07619551

ABSTRACT:
An audio codec is provided, comprising an analog to digital converter (ADC) operable to receive an analog input signal for producing a first digital signal, and a first decimator down samples the first digital signal to generate a first intermediate signal. A second decimator receives a second digital signal from a digital microphone and down sample the second digital signal to generate a second intermediate signal. A multiplexer selects either the first intermediate signal or the second intermediate signal as a selected signal based on a control signal. A third decimator down samples the selected signal to generate a down sampled signal. A data formatter produces a digital output signal based on the down sampled signal.

REFERENCES:
patent: 7167119 (2007-01-01), Lei et al.
patent: 7230557 (2007-06-01), Burk et al.

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