【摘要】 对主动噪声控制系统的前馈型、反馈型和混合型3种控制方式进行了比较,利用Simulink设计了实现FxLMS算法的模块,并进行仿真。结果表明,前馈型控制方式可降低与参考信号相关的噪声;反馈型控制方式可降低可预测的噪声;而混合型控制方式可同时降低这2种噪声。更多还原

【Abstract】 The feedforward, feedback and hybrid ANC (Active Noise Control) system structures are studied by comparison with each other. A module implementing the Filtered-x LMS algorithm is developed, which is used in an ANC system. Simulation results show that the feedback ANC is able to reduce the noise that correlates with the reference signal, the feedback ANC can reduce the noise that is predictable, while the hybrid ANC can reduce both kinds of noise.更多还原