Dielectric comb for MEMS device

A microphone comprising:

• a dielectric comb comprising:
• a housing defining a cavity;
• a plurality of conductors positioned within the cavity, the plurality of conductors structured to move in response to pressure changes while the housing remains fixed, the pressure changes including pressure changes resulting from acoustic activity and pressure changes resulting from changes in an atmospheric pressure, the plurality of conductors including:
• at least one first conductor configured to generate first electrical signals responsive to the pressure changes resulting from changes in the atmospheric pressure;
• and
• at least one second conductor configured to generate second electrical signals responsive to the pressure changes resulting from the acoustic activity;
• and
• at least one dielectric bar positioned within the cavity and secured in a fixed position with respect to the cavity such that the at least one dielectric bar remain fixed under the pressure changes, wherein each of the at least one dielectric bars is adjacent to at least the at least one first conductor or at least one second conductor of the plurality of conductors;
• and
• a control circuit comprising:
• an atmospheric pressure processing circuit electrically coupled to the at least one first conductor and configured to receive the first electrical signals and generate an atmospheric pressure signal indicative of the pressure changes resulting from the changes in atmospheric pressure;
• and
• an acoustic activity processing circuit electrically coupled to the at least one second conductor and configured to receive the second electrical signals and generate an acoustic signal indicative of the pressure changes resulting from the acoustic activity.