White Noise


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White Noise

The audio equivalent of Brownian motion. Sounds that are unrelated and sound like a hiss. The video equivalent of white noise is "snow" in television reception.

Random Walk Theory

An investment philosophy holding that security prices are completely unpredictable, especially in the short term. Random walk theory states that both fundamental analysis and technical analysis are wastes of time, as securities behave randomly. Thus, the theory holds that it is impossible to outperform the market by choosing the "correct" securities; it is only possible to outperform the market by taking on additional risk. Critics of random walk theory contend that empirical evidence shows that security prices do indeed follow particular trends that can be predicted with a fair degree of accuracy. The theory originated in 1973 with the book, A Random Walk Down Wall Street. See also: Efficient markets theory.
References in periodicals archive ?
Moving towards the end of the spectrum, the PSD becomes flat, revealing a pure white noise in the highest frequencies.
This pattern of results strongly supports the hypothesis that level of white noise has an impact on working memory (H1).
From above definitions, we known that so-called white noise is formally regard as the derivative of a Brownian motion [W.
Matthew, who is married to Jessica and has twin three-year-old daughters, has also created nursery rhymes app, Lullaby Time and White Noise Ambience Seasons as well as an online calculator.
This was no train - it was loud enough to easily overwhelm the white noise machine.
Theory of white noise is applied to the combined dynamical systems, while the stochastic part of these systems approaching the normal probability distribution is represented as a process of constant and frequency unlimited intensity of power spectral density.
The experiment employed Mozart's Sonata for Two Pianos in D major (K448), played at approximately 65 dB on a CD player, and a CD of ten minutes of white noise at 70 dB, which produced subjectively equal loudness.
This means that the spectrum of an ideal white noise source has constant power per cycle regardless of frequency.
My essay will examine the topic of violence in White Noise by unraveling the various literary genres on which DeLillo relies.
When white noise is added, CDT increases with the noise power spectral density or level ([N.
But the real star was the raven, who shadowed Teshigawara and whose talons clacked on the floor during respites from the music that ranged from industrial white noise to romantic, orchestral swellings.
Hausswolff often works with electronic sound, and here he employs it unostentatiously, displaying an acute awareness of the ability of white noise to take on physical, sometimes even anthropomorphic, qualities.