Implantable microphone management

A device, comprising:

• an implantable microphone configured to be implanted in a temporal bone region of a recipient, including:
• a transducer, and
• a chamber in which a gas is located such that vibrations originating external to the microphone based on sound are effectively transmitted therethrough, wherein
• the transducer is in effective vibration communication with the gas, wherein the transducer is configured to convert the vibrations traveling via the gas to an output signal,
• the chamber and the transducer correspond to a microphone system, wherein the chamber corresponds to a front volume of the microphone system, and the transducer includes a back volume corresponding to the back volume of the microphone system, and
• the implantable microphone is configured to enable a pressure equalization between the back volume and the front volume.

A method, comprising:

• capturing at a first temporal location first sound originating external to a recipient with an implanted microphone system implanted in the recipient while the implanted microphone system has a pressure ratio between a pressure of a front volume and a pressure of a back volume of the implanted microphone system of a first value;
• subsequent to the first temporal location, at a second temporal location, experiencing a first event that causes the pressure ratio to change to a second value different from the first value;
• and
• during a first temporal period beginning after the first temporal location, while continuing to experiencing the first event, changing the pressure ratio from the second value back towards the first value.