介绍了自适应回声消除器的基本结构及各个功能模块，例如：变阶数自适应滤波器，语音状态检测器，延迟分析器和NL MS算法控制器。
The structure of AEC as well as its composing modules, are introduced such as the speech detector, the adaptive filter, the time delay estimator and the NLMS algorithm controller.
文章在已有的网络安全功能模块基础上，应用自适应控制与调节原理重构自适应的网络安全部件。
Based on the existing network security module, in this paper, the model of the self adaptation security com-ponents are reconstructed by applying the principle of auto-adapted adjustment.
在仿真部分，扩充了NS2仿真平台上已有的功能模块，从而验证了所提出的自适应门限预切换机制的性能。
For simulation, the existing functional modules on NS2 simulation platform are expanded, so that the performance of the mechanism with adaptive threshold is verified.
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