White Noise
270
浏览
0
关注

White noise is a random signal (information theory)|signal or process with a flat power spectral density. In other words, the signal contains equal power within a fixed bandwidth (signal processing)|bandwidth at any center frequency. White noise draws its name from White#Light|white light in which the power spectral density of the light is distributed over the visible band in such a way that the eye's three color receptors (Cone cell|cones) are approximately equally stimulated. In statistical sense, a time series rt is characterized as having weak white noise if {rt} is a sequence of serially uncorrelated random variables with zero mean and finite variance. Strong white noise also has the quality of being independent and identically distributed. In particular, if rt is Normal distribution|normally distributed with mean zero and standard deviation σ, the series is called a Gaussian white noise. An infinite-bandwidth white noise signal is a purely theoretical construction. The bandwidth ...
[展开]
相关概念
Spectrum    
Real Time    
Time Series    
主要的会议/期刊
演化趋势
Chart will load here
White Noise文章数量变化趋势

Feedback
Feedback
Feedback
我想反馈:
排行榜