Natural Flicker Noise (“1/ f Noise”) in Music

"1/f noise" in music: Music from 1/f nOiSe

The spectral density of fluctuations in the audio p wer of many musical selections and of English speech varies approximately s l/f (f is the frequency) down to a frequency of 5X 10 -4 Hz. This resultAmplies that he audio-power fluctuations are correlated over all times in the same manner as "l/f noise" in electronic components. The frequency fluctuations of music also have a 1/f spectral densi...

Heart rate variability in natural time and 1/f “noise”

Several studies have shown that heart rate fluctuations exhibit the ubiquitous 1/f behavior which is altered in desease. Furthermore, the analysis of electrocardiograms in natural time reveals that important malfunctions in the complex system of the human heart can be identified. Here, we present a simple evolution model in natural time that exhibits the 1/f behavior with a close to unity. The ...

On 1/f Noise

Due to the fact that 1/f noise gains the increasing interests in the field of biomedical signal processing and living systems, we present this introductive survey that may suffice to exhibit the elementary and the particularities of 1/f noise in comparison with conventional random functions. Three theorems are given for highlighting the particularities of 1/f noise. The first says that a random...

1 / f noise

Pulses and 1/f Noise

Low-frequency fluctuations with a 1/f frequency spectrum were first noticed by Johnson [1] in thermionic-emission currents in vacuum tubes, and exist in a very wide range on phenomena. A feature common to most of these phenomena is that they involve a quasirandom sequence of pulses on the microscopic scale. The spectrum of energies associated with a short pulse of characteristic width Δt is rou...