SYSTEMS AND METHODS FOR DYNAMIC REFERENCE SIGNAL SELECTION AND GAIN ADJUSTMENT IN ADAPTIVE NOISE CANCELLATION SYSTEMS

原文（中文）

Systems and methods are provided for enhancing the performance and adaptability of active noise cancellation (ANC) systems in vehicles by dynamically adjusting reference signal gains and combining reference signals based on vehicle operating conditions. A plurality of noise reference signals are acquired from sources like accelerometers, acoustic vehicle alerting system (AVAS) speakers, LiDAR sensors, seat motors, and HVAC blowers. Vehicle parameters such as speed, seat position, and blower speed are estimated to retrieve dynamic gain values from lookup tables. The dynamic gains are applied to the respective noise reference signals to generate gain-adjusted reference signals. The gain-adjusted signals are mixed using configurable mixing gains to produce a reduced set of combined reference signals provided to an adaptive filter. This approach enables the ANC system to effectively cancel a wider variety of noise sources, including transient sources, while preventing noise boosting artifacts when sources turn off.