前言 主动噪声衰减(ANR)是一种以连续工作的用一小扩音器采集头戴送、受话器耳体内噪声样品的电子系统。这些信号的相位通过头戴送、受话器的话筒被翻转后,靠声场的破坏性干扰而使噪声水平降低。该系统提供好的低频噪声衰减。但空勤人员在主观认识上对ANR存在分歧。目前的研究试图将ANR对噪声 Preface Active Noise Reduction (ANR) is an electronic system that uses continuous sampling of a small loudspeaker to collect noise samples from the headset’s ear. The phase of these signals is sent through the head and the receiver’s microphone is flipped and the level of noise is reduced by destructive interference with the sound field. The system provides good low frequency noise attenuation. However, aircrews subjectively disagree about ANR. Current research attempts to put ANR on noise