有源消声耳罩中的通信信号补偿  

Compensation of communication signal in active noisecancellation earmuffs

作　　者：张耿[1] 连小珉[1] 刘锋 蒋孝煜[1] 

机构地区：[1]清华大学汽车工程系,北京100084

出　　处：《应用声学》1999年第4期13-17,共5页Journal of Applied Acoustics

摘　　要：在有源消声耳罩的很多应用场所，耳罩中引入了通信信号，在提高有源消声量的同时，还要保证通信信号的清晰。本文针对有源消声耳罩的不同消声结构，分析了其中通信信号所受到的影响，对于通信信号受影响较大的消声结构，提出了相应的补偿方案，推导了补偿器的理论补偿公式．并且实际设计了消声耳罩和相应的通信信号补偿器，实测了通信信号的补偿效果，就实验结果分析了通信信号补偿方案的有效性．in many applications of Active Noise-Cancellation Earmuff(ANCE), communication signal is introduced into the earmuff while the function of active noise cancellation is being realized. Keeping the clarity of communication signal is as important as enhancing the ability of active noise cancellation. This paper will analyze the influence on the communication signal in different types of ANCEs, and then propose a compensation method for the type of ANCE in which the communication signal is affected. A design of the compensator for the communication signal is realized and its compensation effect is tested with the result that the effectiveness of the compensation method is verified.

关 键 词：耳罩 有源式 消声耳罩 通信信号 信号补偿 

分 类 号：TB535[理学—物理]