Dynamic control of multiple feedforward microphones in active noise reduction devices

A computer-implemented method comprising:

• processing signals received from a first subset of microphones from a plurality of feedforward microphones disposed on an earpiece of an ANR device to generate input signals for an ANR mode of operation;
• processing signals received from a second subset of microphones from the plurality of feedforward microphones to generate input signals for a hear-through mode of operation,
• wherein each of the plurality of feedforward microphones is configured to generate signals representing ambient audio for both the ANR mode of operation and the hear-through mode of operation of the ANR device;
• detecting, based on the signals received from the second subset of microphones, that a particular microphone of the second subset is acoustically coupled to an acoustic transducer of the ANR device in the hear-through mode of operation;
• and
• in response to the detection, processing the signals received from the second subset of microphones without using signals received from the particular microphone to generate the input signals for the hear-through mode of operation.

One or more non-transitory machine-readable storage devices having encoded thereon computer readable instructions for causing one or more processing devices to perform operations comprising:

• processing signals received from a first subset of microphones from a plurality of feedforward microphones disposed on an earpiece of an ANR device to generate input signals for an ANR mode of operation;
• processing signals received from a second subset of microphones from the plurality of feedforward microphones to generate input signals for the hear-through mode of operation,
• wherein each of the plurality of microphones is usable for capturing ambient audio to generate input signals for both an ANR mode of operation and a hear-through mode of operation of the ANR device;
• detecting, based on the signals received from the second subset of microphones, that a particular microphone of the second subset is acoustically coupled to an acoustic transducer of the ANR device in the hear-through mode of operation;
• and
• in response to the detection, processing the signals received from the second subset of microphones without using signals received from the particular microphone to generate the input signals for the hear-through mode of operation.