说明：  噪声自适应对消的Matalb Simulink模块，利用标准的NLMS算法，实现噪声对消，AEC（audio echo cancel）或ANC（audio noise cancel）
(Adaptive Noise Cancellation of Matalb Simulink module, using a standard NLMS algorithm, to achieve noise cancellation, AEC (audio echo cancel) or ANC (audio noise cancel))