Active noise cancellation system and method

A system comprising:

• a vehicle;
• one or more occupants positioned in the vehicle;
• a plurality of speakers comprising a left door speaker, a right door speaker, a driver headrest left speaker, a driver headrest right speaker, a passenger headrest left speaker, a passenger headrest right speaker, and a rear speaker positioned in the vehicle;
• a plurality of physical error microphones comprising a first dash microphone, a second dash microphone, a left door microphone, a right door microphone, a driver headrest left microphone, a driver headrest right microphone, a passenger headrest left microphone, and a passenger headrest right microphone positioned in the vehicle;
• a plurality of virtual error microphones comprising a driver left virtual microphone, a driver right virtual microphone, a passenger left virtual microphone, and a passenger right virtual microphone positioned in the vehicle;
• and
• a sensor detecting a head position of the one or more occupants of the vehicle;
• a stored database of head-related impulse responses;
• and
• a controller in electronic communication with the sensor, the stored database, the plurality of speakers, the plurality of physical error microphones, and the plurality of virtual error microphones, the controller programmed to execute a method, comprising:
• generating a noise cancellation signal using head-related impulse response filtering;
• and
• in response to detecting a first position of the one or more occupants:
• going to the stored database of the head-related impulse responses;
• selecting only a first subset of transfer functions comprising the head-related impulse response filtering;
• and
• updating only the first subset based on the first position;
• and
• in response to detecting a second position of the one or more occupants;
• going to the stored database of head-related impulse responses;
• selecting only a second subset of transfer functions comprising the head-related impulse response filtering;
• and
• updating only the second subset based on the second position, wherein only the first subset is different from only the second subset.