自适应抗噪声送话器的实验研究  

Experimental Study for Adaptive Antinoise Transmitter

作　　者：刘晓文[1] 李明锋[1] 李晓东[1] 田静[1] 

机构地区：[1]中国科学院声学研究所,北京100080

出　　处：《电声技术》1999年第5期26-30,共5页Audio Engineering

摘　　要：文中对自适应抗噪声送话器进行了实验探讨，比较、讨论了滤波器阶数、步长、采样频率以及主输入传声器和参考输入传声器的相对距离、位置和声场对控制效果的影响，指出了距离、位置等和相干性有关的因素是影响控制效果的主要因素。并通过实验证明，自适应抗噪声送话器大大提高了语言的可懂度。Adaptive antinoise transmitters are experimentally studied in this paper. The influence, which is caused by order number, step width of filter, sampling frequency,the relativedistance between main input microphone and the reference, position or sound field, is comparedand discussed.The factors relevant to coherence, such as distance and position, are main factors.The experiment shows that the adaptive antinoise transmitter can increase the speech intelligibilitygreatly.

关 键 词：自适应 噪声抵消技术 滤波器 传声器 

分 类 号：TN641[电子电信—电路与系统] TN713