Ear-mountable listening device with orientation discovery for rotational correction of microphone array outputs

An ear-mountable listening device, comprising:

• an array of microphones configured to capture sounds emanating from an environment and output first audio signals representative of the sounds, wherein the array of microphones has a rotational position that is variable relative to an ear of a user;
• a speaker arranged to emit audio into the ear in response to a second audio signal;
• sensors mounted in a fixed relation to the array of microphones to rotate with the array of microphones;
• and
• electronics coupled to the array of microphones and the speaker, the electronics including logic that when executed by the electronics causes the ear-mountable listening device to perform operations including:
• analyzing outputs of the sensors to identify a signature match representative of an occurrence of a characteristic human behavior having at least one of a typical head orientation or a typical head motion associated with the characteristic human behavior;
• in response to identifying the signature match, comparing current sensor values output from the sensors to expected sensor values associated with the signature match;
• and
• applying a rotational correction to the first audio signals to generate the second audio signal that drives the speaker, the rotational correction determined based at least in part upon a deviation of the current sensor values from the expected sensor values.