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合理地布放误差传感器可以减小自适应有源噪声控制系统的复杂性，提高降噪量。本文研究了自由声场条件下误差传感器布放与ＡＡＮＣ系统降噪效果的关系，从理论和实验两个方面总结了自由场误差传感器布放规律。
Reasonable placement error sensor can reduce the complexity of adaptive active noise control system and improve the noise reduction. In this paper, we study the relationship between the error sensor placement and the noise reduction effect of AANC system under the condition of free acoustic field, and summarize the law of placement of free-field error sensor from two aspects of theory and experiment.