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介绍了一种采用动反馈式扬声器的管道有源自适应噪声控制系统，系统中动反馈扬声器既作为有源消声系统的执行元件，也作为检测控制效果的声传感器。分析了系统中存在的各声学通道，并进行了基于自适应线性神经网络的辨识。该方法实现简便，对工作环境无干扰，各声学通道传递函数估计精度高。
A kind of pipe active adaptive noise control system with dynamic feedback speaker is introduced. The system ’s dynamic feedback loudspeaker not only acts as the executive component of the active muffler system but also as the acoustic sensor to detect the control effect. The acoustic channels existing in the system are analyzed and the identification based on adaptive linear neural network is carried out. The method has the advantages of simple implementation, no interference to the working environment, and high accuracy of the transfer function estimation of each acoustic channel.