论文部分内容阅读
传统的抗噪声送话器和受话器的低频抗噪声能力一般都很有限,而现代的强噪声环境的噪声能量却越来越多地集中于中、低频段。在有源护耳器的基础上发展起来的有源抗噪声送话器和受话器,不仅具有优越的低频抗噪能力,而且在声音的衰减中还有一定的选择性;在大大提高低频噪声环境中的语言通讯信噪比的同时,还保证了很高的语言清晰度。本文在文献[1]的基础上,详细讨论了有源抗噪声送、受话器的基本原理、结构和实验研究结果。
The traditional anti-noise microphones and receivers have generally low-frequency anti-noise ability, while the noise power of the modern strong noise environment is more and more concentrated in the middle and low frequency bands. The active anti-noise microphone and receiver developed on the basis of active ear protectors not only have superior low-frequency anti-noise ability but also have certain selectivity in attenuation of sound. In the condition of greatly improving the low-frequency noise environment The language communication signal to noise ratio at the same time, also guaranteed a high language clarity. Based on the literature [1], this paper discusses in detail the basic principles, structure and experimental results of active anti-noise transmission and receiver.