THE BENEFITS OF BACKGROUND-NOISE
THE BENEFITS OF BACKGROUND-NOISE
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DOI：
10.1038/scientificamerican0895-66
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发表时间：
1995-08-01
影响因子：
3
通讯作者：
WIESENFELD, K
中科院分区：
文献类型：
--
作者：
MOSS, F;WIESENFELD, K
非线性系统只检测那些超过某个阈值的周期性信号（红色）。噪声（绿色）可以将弱信号提升到阈值以上，并且当信号接近峰值（蓝色区域）时最有可能这样做。因此，detectorÃs输出（黑色刻度）说明了微弱的signalÃs周期性。
NONLINEAR SYSTEMS detect only those periodic signals (red) that rise above some threshold. Noise (green) can boost a weak signal over the threshold and will most likely do so when that signal is close to its peak (blue region). Hence, the detectorÃs output (black ticks) tells of the weak signalÃs periodicity.