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Another important aspect of hearing is our ability to hear in noise. Our auditory system is designed to filter out background noise and focus on the sounds that are most relevant to us.
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] Elevated workplace or environmental noise can cause hearing impairment, tinnitus, hypertension, ischemic heart disease, annoyance, and sleep disturbance.
Hearing range describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range is commonly given as 20 to 20,000 Hz, although there is considerable variation between individuals, especially at high frequencies, and a gradual loss of sensitivity to higher frequencies ...
The initiative's main goal is to ensure that people of all ages can enjoy listening to music and other audio media in a manner that does not create a hearing risk. Noise-induced hearing loss , hyperacusis , and tinnitus have been associated with the frequent use at high volume of devices such as headphones , headsets , earpieces , earbuds, and ...
High noise levels can contribute to cardiovascular effects in humans and an increased incidence of coronary artery disease. [7] [8] In animals, noise can increase the risk of death by altering predator or prey detection and avoidance, interfere with reproduction and navigation, and contribute to permanent hearing loss. [9]
High exposure to environmental noise can play a role in cardiovascular disease. Noise can raise blood pressure, change heart rate, and release stress hormones. Consistent changes in these health statistics can lead to risks for hypertension, arteriosclerosis, and even more serious events such as a stroke or myocardial infarction. [10] [11]
The European Union (EU) set up European guidelines in respect to noise pollution. [10] For nighttime, it is advised to not exceed the 40 dB L night threshold outside the residence. [11] An interim threshold of 55 dB L night is set as an upper bound, because above this limit, (sleeping) disorders are more prevalent. However, about 20% of people ...
Personal noise reduction devices can be passive, active or a combination. Passive ear protection includes earplugs or earmuffs which can block noise up to a specific frequency. Earplugs and earmuffs can provide the wearer with 10 dB to 40 dB of attenuation. [99]