CPC H04R 3/06 (2013.01) [H03M 1/12 (2013.01); H04R 3/02 (2013.01); H04R 19/04 (2013.01); H04R 2201/003 (2013.01)] | 20 Claims |
1. A digital microphone comprising:
an analog-to-digital converter (ADC) for receiving an analog input signal;
a DC blocker component coupled to the ADC;
a digital low pass filter coupled to the DC blocker component; and
a nonlinear compensation component coupled to the digital low pass filter for providing a digital output signal,
wherein a transfer function of the nonlinear compensation component comprises a second order polynomial, and wherein the nonlinear compensation component comprises a multiplier coupled to an input of the nonlinear compensation component, a gain stage coupled to an output of the multiplier, and an adder coupled to an output of the gain stage and coupled to the input of the nonlinear compensation component.
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