噪声历来是人们设法排除的对象,可是白噪声却具有特殊的作用。例如,白噪声可以镇痛及催眠等。什么是白噪声呢?白噪声是利用颜色来描绘声音的一种表述。白色光是由各种颜色按一定比例混合而成的,如果用滤色镜来分析白色光,就会得到各种纯色光。白噪声如同白光一样也是由多种频率的噪声混合而成的,其能量分布是连续和均匀的。白噪声的频谱如图1所示。不知道你有没有过这样的感觉,人睡觉 Noise has always been the object of people trying to exclude, but white noise has a special role. For example, white noise can be analgesic and hypnotic. What is white noise? White noise is the use of color to describe the sound of a statement. White light is a mixture of various colors by a certain percentage, if you use color filters to analyze white light, you will get all kinds of solid color light. White noise, like white light, is also a mixture of noise of many frequencies whose energy distribution is continuous and uniform. The white noise spectrum is shown in Figure 1. Do not know if you’ve ever had such a feeling, people sleep