空间声场的自适应有源噪声控制

ADAPTIVE ACTIVE NOISE CONTROL IN THREE-DIMENSIONAL AREAS

自适应有源噪声控制技术（AANC）以其独特的优点，受到噪声控制界的高度重视，为低频噪声的控制开辟了一条崭新的途径．以此AANC技术为基础，结合模型参考自适应中的信号综合型MRAS超稳定设计方法及其简化工程设计方法，提出了一种自适应降噪装置的实施方案，并通过计算机仿真及硬件实验，取得了明显的消声效果．

Adaptive aCtive noise control (AANC) has many unique advantages in low frequency range and has opened up a brand-new way to conrtol low frequency effcitively. This paper is based on the technique, and combined with the asymptotic hyperstable method of MRAS and the MRAS engineering design designd. An actual method of AANC is presented in this paper. On the basis of the computer emulation,the hardware of AANC system is designed and developed. The results of both computer emulation and experiment showed the effectiveness of the method.