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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 reduction earmuffs, communication signals are introduced into the earmuffs, and at the same time the amount of active noise reduction is improved, the clarity of communication signals is also ensured. In this paper, different muffler structures of active muffler earmuffs are analyzed, and the influence of the communication signals is analyzed. For the muffling structure that has a great influence on the communication signals, a corresponding compensation scheme is proposed, and the theoretical compensation of the compensator formula. The ear muffler and the corresponding communication signal compensator are designed. The compensation effect of the communication signal is measured. The experimental results show the effectiveness of the communication signal compensation scheme.