#research #signal-processing/noise See also: [[Shot Noise]] and [[Thermal Noise]] # Flicker Noise or 1/f Noise or Pink Noise Motivation: understanding proper filtering techniques Flicker noise, or 1/f noise, is a low frequency noise characterized by a [[Power Spectral Density]]: $ S_{bf} = \frac{S_{bf1}}{|f^\alpha|} $ where: - $\alpha \approx 1$ - and $S_{bf1}$ is the values of $S_{bf}(f)$ at 1 Hz. - The variance is the integral from $(-\infty, \infty)$ of $S_{bf}$ ![[Pasted image 20230808100324.png]]