US 12,444,396 B2
System and method for adjusting active noise cancellation tuning parameters
Jeffrey Charles Tackett, Allen Park, MI (US)
Assigned to HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED, Stamford, CT (US)
Filed by Harman International Industries, Incorporated, Stamford, CT (US)
Filed on Aug. 28, 2023, as Appl. No. 18/238,855.
Prior Publication US 2025/0078798 A1, Mar. 6, 2025
Int. Cl. G10K 11/178 (2006.01)
CPC G10K 11/17817 (2018.01) [G10K 11/17825 (2018.01); G10K 11/17881 (2018.01); G10K 11/17823 (2018.01); G10K 2210/12821 (2013.01); G10K 2210/30232 (2013.01); G10K 2210/3026 (2013.01); G10K 2210/3027 (2013.01); G10K 2210/3028 (2013.01); G10K 2210/3044 (2013.01); G10K 2210/3046 (2013.01); G10K 2210/3055 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An active noise cancellation (ANC) system comprising:
at least one audio signal source to provide an audio signal in a cabin of a vehicle;
at least one loudspeaker to project anti-noise sound within the cabin of a vehicle in response to receiving an anti-noise signal;
at least one microphone to provide a first error signal indicative of noise, the audio signal, and the anti-noise sound within the cabin and a second error signal indicative of an estimated anti-noise signal; and
at least one controller programmed to:
receive the first error signal and the second error signal; and
provide an estimated impulse response based at least on the first error signal and the second error signal;
select a first pre-stored impulse response from a plurality of pre-stored impulse responses based on the estimated impulse response to filter one or more reference signals at an adaptive filter to generate the anti-noise signal, and
select a first plurality of pre-stored tuning parameters from a plurality of pre-stored sets of the tuning parameters based on the first pre-stored impulse response; and
tune the adaptive filter with the first plurality of pre-stored tuning parameters to generate the anti-noise signal.