History of White noise in Timeline

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By Popular Timelines Editorial Team  · Updated:
White noise

White noise, in signal processing, is a random signal characterized by equal intensity across different frequencies, resulting in a constant power spectral density. This concept is utilized in various fields such as physics, acoustics, telecommunications, and statistics. It's a statistical model for signals and their sources, not a specific signal itself. The term is derived from white light, although the spectral density of white light is typically not flat across the visible spectrum.

1962: First domestic use white noise machine

In 1962, the Marpac Sleep-Mate, the first domestic use white noise machine, was created by Jim Buckwalter.

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1985: Publication of White Noise by Don DeLillo

In 1985, Don DeLillo's novel White Noise was published, exploring the symptoms of modern culture and its impact on individual actualization.

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2007: White noise and cognitive function study

In 2007, a study found that white noise background stimulation improves cognitive functioning among secondary students with attention deficit hyperactivity disorder (ADHD), while decreasing performance of non-ADHD students.

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