Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Li-Te Wu0
Date of Patent
November 17, 2009
0Patent Application Number
121814810
Date Filed
July 29, 2008
0Patent Primary Examiner
Patent 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.
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