多媒体语音室系统噪声及抑制

分析了多媒体语音室系统噪声的主要来源，提出了相应的抑制方法和降噪措施：采用滤波和去耦的方法，消除通过电源线或地线进入语音室系统的噪声；应用接地和屏蔽措施，抑制传输线向其周围的辐射和电磁感应耦合；采取零电位一点接地技术，控制同一地线上各回路之间的干扰，减弱或抑制了各种主要噪声的干扰。

Restrain Noises in the Multimedia Language Laboratory System

This paper analyzed the source of noises primarily in the multimedia language lab system. It suggested some methods by which we can restrain and reduce the noises. Using filtering and anti coupling, we remove the noises in language lab system transmitted from the power wire and ground wire. Taking the effective measures of grounding and shielding, we restrain the radioactive and electro magnetic coupling around wire. Adopting the technology of zero voltage grounding in a point, we control the interference from the different circuits grounded together, so that we can restrain the main noises.