利用计算机声卡产生高斯白噪声的方法  

Method of generating white Gaussian noise with computer sound card

作　　者：鲁千红[1] 李桂祥[1] 祁炜[1] 文小乔[1] 

机构地区：[1]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2014年第6期404-406,共3页Journal of Air Force Early Warning Academy

摘　　要：为了在雷达信号处理和数据处理算法研究中产生真正的白噪声,提出了一种利用话筒、计算机声卡和Matlab软件产生高斯白噪声的方法.该方法首先采集环境噪音,然后进行白化滤波处理,使其变成白噪声,最后进行统计检验,若通过正态性和独立性检验,则作为高斯白噪声输出.实验结果表明,该方法既避免了数学方法的确定性,又不必设计专门的硬件电路;产生的白噪声能满足正态性和独立性的要求.In order to generate the real white noise for the research of radar signal processing and data processing algorithm, this paper studies a novel method of employing a microphone, computer sound card and Matlab software to generate white Gaussian noise. In this scheme, the environmental noise acquisition is carried out, whitening filtering processing is done to make it become white noise, and finally, the statistical test is performed, where it can be taken as the output of white Gaussian noise if it passes the normality and independence test. Experimental results show that this proposed method can not only avoid the certainty of mathematical method, but also no need to design the specific hardware circuit, and the white noise generated can meet the requirements for normality and independence.

关 键 词：高斯分布 白噪声 计算机声卡 

分 类 号：TN955[电子电信—信号与信息处理]