If a sound similar to the "hiss" from the wind or the waves, but constant and repeated is the white noise or white noise is achieved by combining all the sounds of the environment from 0 to 22,000 Hz The uses that have given this mix of sounds, is therapy for some common ailments in humans. Although it is used to soothe discomfort, is not a medical therapy.
White Noise is only an aid to control symptoms, naturally, in some cases doctors. For example, it has been recommended in patients who suffer from tinnitus (ringing, whistle or noise that a person feels constantly in the ear). White noise to help mask the buzzing and reduces the discomfort. Because of its relaxing effects, it is also used to control insomnia. In the case of babies with colic or worried, this reassures the therapy helping to reduce crying.
It is also used to mask other noises, that is, makes you miss the intensity of that sound by the action of others. For example, if a group of people holding a conversation and have white noise in your environment, no strangers to the meeting may hear it. The white noise is traded on electronic equipment developed by high technology companies, some at high cost. Also on compact discs at affordable prices.
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