Active damping of resonant canal modes

An active noise reduction (ANR) device comprising:

• an acoustic transducer configured to generate output audio;
• a first sensor configured to generate a first signal indicative of audio originating from an external environment of the ANR device;
• a second sensor configured to generate a second signal indicative of audio arriving at an ear canal of a user of the ANR device;
• and
• circuitry configured to:
• identify, based on the first signal and the second signal, a signal indicative of one or more resonant modes of the user's ear canal;
• and
• modify the output audio generated by the acoustic transducer based on the signal indicative of the one or more resonant modes of the user's ear canal.

A method comprising:

• receiving, from a first sensor of an active noise reduction (ANR) device, a first signal indicative of audio originating from an external environment of the ANR device;
• receiving, from a second sensor of the ANR device, a second signal indicative of audio arriving at an ear canal of a user of the ANR device
• identifying, based on the first signal and the second signal, a signal indicative of one or more resonant modes of the user's ear canal;
• and
• modifying output audio generated by an acoustic transducer based on the signal indicative of the one or more resonant modes of the user's ear canal.

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

• receiving, from a first sensor of an active noise reduction (ANR) device, a first signal indicative of audio originating from an external environment of the ANR device;
• receiving, from a second sensor of the ANR device, a second signal indicative of audio arriving at an ear canal of a user of the ANR device
• identifying, based on the first signal and the second signal, a signal indicative of one or more resonant modes of the user's ear canal;
• and
• modifying output audio generated by an acoustic transducer based on the signal indicative of the one or more resonant modes of the user's ear canal.