Patent ID: 8036401

Claim:
A MEMS microphone assembly including a microphone housing, the MEMS microphone assembly comprising: a sound inlet; a MEMS transducer element having a back plate and a diaphragm displaceable in relation to the back plate; a controllable bias voltage generator adapted to provide a DC bias voltage between the diaphragm and the back plate; a memory for storing information including amplifier gain setting information; a controllable amplifier for receiving an electrical signal from the MEMS transducer element and providing an output signal, the controllable amplifier being adapted to amplify the electrical signal from the MEMS transducer in accordance with an amplifier gain setting; and a processor adapted to retrieve information from the memory and to control the gain of the amplifier in accordance with the amplifier gain setting information from the memory, and control the bias voltage generator to provide a DC bias voltage in accordance with the information from the memory.