【摘要】 讨论了自适应数字信号处理应用于有源噪声控制的问题，分析了自适应控制的管道有源降噪系统的传递函数，建立了数学模型并采用通用的ＬＭＳ算法．利用ＦＩＲ滤波器和ＩＩＲ滤波器在计算机上进行了仿真，给出了仿真结果，并提出了改进仿真和降噪效果的方法．更多还原

【Abstract】 Discusses the adaptive sigital signal processing in active noise reduction control. Analyzes the transfer function of the adaptive noise reduction system with adaptive control in a duct. Establishes the mathematical model using FIR filter using the LMS algorithm. Characteristics of the active noise reduction system have been simulated by the computer, and some results from the computer simulation are given ways of improving the method of simulation as well as the effect of noise reduction are proposed.更多还原