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 ?
Furthermore, we take the white noise residuals test.
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.
My essay will examine the topic of violence in White Noise by unraveling the two violent and often contradictory literary genres on which DeLillo relies.
One of the earliest interventions tried was the use of white noise (Borkowski, Hunter & Merele, 2001; Schmidt, 1975).
White noise is created by an internal siren connected to the intruder alarm and when triggered the burglar is met by an unbearable barrier of sound.
Testing is to education what white noise is to music," says Botstein, who's also the principal conductor of the American Symphony Orchestra.
As you enter, visual and acoustic references are slowly erased, leaving only a visual white-out and the white noise of the pulsating nozzles.
The lights can be played simultaneously with any of seven soothing sounds of nature - choose from Heartbeat, Ocean, Fountain, Bird Song, Summer Night, White Noise or Spring Rain.
Once establishing baseline data, tinnitus will be produced in the animals by exposing them to excessive white noise.
Along the way, DeLillo has crafted an oeuvre that includes such highly regarded novels as 1972's End Zone (which hilariously links college football and nuclear war); 1985's White Noise (which follows the travails of a professor who creates the academic field of "Hitler Studies"); and 1988's Libra (which offers a detailed and compelling meditation on Lee Harvey Oswald, the assassination of John F.
Tuning your friend out can work wonders, but who wants to be surrounded by white noise all the time?
This match was a completely different affair to previous group ones at Ibrox, when Sturm Graz were swept away on a tide of white noise.