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基于分布参数控制理论和声学理论，本文清晰地表达了有源消声（ＡＮＣ）所涉及的控制对象、控制系统和性能指标间的关系，指出了控制系统设计所要满足的稳定性条件和消声条件，为ＡＮＣ的进一步研究提供了有效的方法。文中对目标消声处局部区域声场状况，在主次声源、传声器不同位置下进行了仿真计算，弥补了以往未作这方面分析的不足，为有源消声系统的位置布放提供了依据。
Based on distributed parameter control theory and acoustic theory, this paper clearly expresses the relationship between the control object, control system and performance index of Active Noise Canceling (ANC), points out the stability conditions and muffler Conditions, provide an effective method for the further study of ANC. In this paper, the sound field in the local area of the target muffler is simulated in different positions of the primary and secondary sound sources and the microphones to make up for the lack of analysis in this area in the past, which provides the basis for the deployment of the active muffler system .