The control objective of active noise control (ANC) system is modified from minimizing sound pressure to minimizing loudness. The improved loudness-filtered least square mean (LFLMS) algorithm is derived based on delay-compensated structure and inverse-model structure. A double channel ANC system is installed in a passenger car cabin. Three algorithms are used to attenuate the engine noise in the cabin. The experimental results indicate that the improved LFLMS algorithm converge faster than LFLMS algorithm, and the loudness control can achieve better subjective effects than the sound pressure control in terms of loudness reduction.
JIANG Shun-ming;;CHEN Nan.
Active Loudness Control of Enclosed Cabin Noise by Using New Algorithm[J]. Journal of Vibration and Shock, 2013, 32(5): 167-170