Sensor device and microphone assembly

A sensor device comprising:

• a transducer configured to generate an electrical signal responsive to sensed pressure changes, the electrical signal including frequency components;
• a forward path circuit having an input coupled to the transducer and configured to receive and condition the electrical signal received from the transducer and provide the conditioned signal at an output of the forward path circuit;
• and
• a pressure sensing circuit configured to generate an output signal based in part on the frequency components of the electrical signal, the output signal of the pressure sensing circuit representative of changes in subsonic pressure sensed by the transducer.

A microphone assembly comprising:

• a microelectromechanical systems (MEMS) transducer configured to generate an electrical signal in response to detecting changes in air pressure, the electrical signal including frequency components in a first frequency range and frequency components in a second frequency range, the second frequency range higher than the first frequency range;
• and
• an electrical circuit including:
• a first processing circuit, including:
• a forward path circuit having an input coupled to an output of the MEMS transducer, an analog to digital (A/D) converter configured generate a digital signal based on the electrical signal, and an output, the forward path circuit configured to output an audio signal based on the electrical signal applied to the input of the forward path circuit;
• a feedback path having a feedback filter having an input coupled to the forward path circuit and configured to filter the digital signal of the forward path circuit;
• and
• a compensation circuit coupled to an output of the feedback filter, wherein the compensation circuit is configured to cancel frequency components in the first frequency range based on an output signal of the feedback filter, the cancellation occurring before the electrical signal is applied to the input of the forward path circuit, and
• a second processing circuit configured to generate an output signal based on the digital signal of the forward path circuit, wherein the output signal of the second processing circuit is indicative of a characteristic of atmospheric pressure measured by the MEMS transducer.