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Noise health effects are the physical and psychological health consequences of regular exposure to consistent elevated sound levels. Noise from traffic, in particular, is considered by the World Health Organization to be one of the worst environmental stressors for humans, second only to air pollution. [2]
Psychoacoustic analysis reveals that sound pressure level is a less than ideal predictor of human reception of noise, so efforts have been made since the 1960s [6] [7] to apply loudness metrics instead, which can incorporate other factors such as spectral and temporal auditory masking and level-dependent frequency weighting to more accurately ...
In a 2011 study, musicologists Michael Oehler and Christoph Reuter [8] hypothesize that the unpleasantness of the sound is caused by acoustic resonance due to the shape of the human ear canal which amplifies certain frequencies, especially those in the range of 2000 to 4000 Hz (the median pitches mentioned above); at such a level that the sound ...
“It has 20 different fan sounds and settings with frequencies that aren’t too intense, and it feels relaxing when I shut my eyes.” $49.95 at Amazon Sound+Sleep Special Edition White Noise ...
[12] [13] The logarithmic scale accommodates the vast range of sound heard by the human ear. Depiction of frequency weighting. Frequency, or pitch, is measured in Hertz (Hz) and reflects the number of sound waves propagated through the air per second. [12] [14] The range of frequencies heard by the human ear range from 20 Hz to 20,000 Hz ...
The frequency of most dog whistles is within the range of 23 to 54 kHz, [5] so they are above the range of human hearing, although some are adjustable down into the audible range. To human ears, dog whistles only emit a quiet hissing sound. [ 6 ]
Hyperacusis is an increased sensitivity to sound and a low tolerance for environmental noise. Definitions of hyperacusis can vary significantly; it often revolves around damage to or dysfunction of the stapes bone, stapedius muscle or tensor tympani ().
Hearing: loud noise, or sound from multiple sources, such as several people talking at once. Sight: crowded or cluttered spaces, bright lights, strobing lights, or environments with much movement such as crowds or frequent scene changes on television. Smell and taste: strong aromas or spicy foods.