Can pink noise enhance sleep and memory? Early research drives a color noise buzz
You may have heard of white noise used to mask background sounds. Now, it has colorful competition.
19 hours ago
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You may have heard of white noise used to mask background sounds. Now, it has colorful competition.
19 hours ago
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As Chicagoans await the emergence of the cicadas, parents of children on the autism spectrum and/or who have sensitivities to sound can take a few steps to prepare for what is expected to be a loud summer.
17 hours ago
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Bob Wilbur thought he'd found a retirement home that would be a place of peace. Nestled against Admiralty Bay on the western edge of Whidbey Island, the three-story house is surrounded by trees and shoreline. It offers the ...
May 9, 2024
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New research by Edith Cowan University (ECU) and Fiona Stanley Hospital aims to decrease noise levels in intensive care units (ICUs) by implementing improvements in acoustic design.
May 1, 2024
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The American Academy of Otolaryngology–Head and Neck Surgery Foundation (AAO-HNSF) has published "Clinical Practice Guideline: Age-Related Hearing Loss" in Otolaryngology–Head and Neck Surgery. This clinical practice ...
Apr 30, 2024
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An international group of noise experts from the Copenhagen Cancer Institute (Denmark), the Swiss Tropical and Public Health Institute (Swiss TPH), the Perelman School of Medicine at the University of Philadelphia (U.S.) ...
Apr 25, 2024
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Nursing homes in disadvantaged communities are more likely to overmedicate residents with antipsychotics, especially homes that are understaffed, according to a study published in JAMA Network Open.
Apr 24, 2024
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In common use, the word noise means any unwanted sound. In both analog and digital electronics, noise is random unwanted perturbation to a wanted signal; it is called noise as a generalisation of the acoustic noise ("static") heard when listening to a weak radio transmission with significant electrical noise. Signal noise is heard as acoustic noise if the signal is converted into sound (e.g., played through a loudspeaker); it manifests as "snow" on a television or video image. High noise levels can block, distort, change or interfere with the meaning of a message in human, animal and electronic communication.
In signal processing or computing it can be considered random unwanted data without meaning; that is, data that is not being used to transmit a signal, but is simply produced as an unwanted by-product of other activities. "Signal-to-noise ratio" is sometimes used to refer to the ratio of useful to irrelevant information in an exchange.
In biology, noise can describe the variability of a measurement around the mean, for example transcriptional noise describes the variability in gene activity between cells in a population.
In many cases, the special case of thermal noise arises, which sets a fundamental lower limit to what can be measured or signaled and is related to basic physical processes described by thermodynamics, some of which are expressible by simple formulae.
In some fields, noise means unwanted information or data that is not relevant to the hypothesis or theory being investigated or tested.
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