A min-max optimization algorithm for global active acoustic radiation control

Abstract

Generally, global active noise control is to minimize the sum of the energy of the residual sound field. But on some occasions, we are more concerned that the energy of the residual noise at every direction does not exceed a certain value. In this paper, an algorithm for global active noise control is introduced to achieve a global active acoustic radiation noise control by minimizing the maximum residual sound energy of the far field after active acoustic radiation control. The proposed algorithm adjusts the weights of the secondary sound sources based on the min-max optimization. Simulation results show that the proposed algorithm can reduce the maximum of the far-field residual sound pressure level 2.2 dB more than the maximum of the residual sound pressure level based on the traditional global acoustic radiation control algorithm.