Patent ID: 7230557
Filing Date: 2007-06-12
Classification: G06F

Abstract:
1. An audio codec comprising: a first analog to digital converter (ADC), operably coupled to a first analog input signal for producing a first one-bit data stream, the first ADC having a first plurality of ADC characteristics; a selection module, operably coupled to the first analog to digital converter, to a second one-bit data stream from a digital microphone and a selection signal, for producing a one-bit output signal that is the first one-bit data stream when the selection signal is in a first state, and for producing the one-bit output signal that is the second one-bit data stream when the selection signal is in a second state; a decimation and filter module, operably coupled to the one-bit output signal, for producing a down sampled signal; and a data formatter, operably coupled to the down sampled signal, for producing a formatted digital audio signal; wherein, the digital microphone includes a second analog to digital converter having a second plurality of ADC characteristics and wherein at least one of the first plurality of the ADC characteristics is different from a corresponding one of the second plurality of ADC characteristics.