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Annoyance effects of noise are minimally affected by demographics, but fear of the noise source and sensitivity to noise both strongly affect the 'annoyance' of a noise. [42] Sound levels as low as 40 dB(A) can generate noise complaints [ 43 ] and the lower threshold for noise producing sleep disturbance is 45 dB(A) or lower.
Highway noise is today less affected by motor type, since the effects in higher speed are aerodynamic and tire noise related. Other contributions to the reduction of noise at the source are: improved tire tread designs for trucks in the 1970s, better shielding of diesel stacks in the 1980s, and local vehicle regulation of unmuffled vehicles.
This industrial symphony may just seem like background din, considering that an estimated 1 in 3 Americans is exposed to “excessive noise levels,” but it can have very real health consequences ...
[80] [81] This noise pollution significantly raises the low-frequency ambient noise levels above those caused by wind. [82] Animals such as whales that depend on sound for communication can be affected by this noise in various ways. Higher ambient noise levels also cause animals to vocalize more loudly, which is called the Lombard effect.
The following is a short list of recognized effects of noise that can be addressed as a reason for a noise ordinance. Excess non-Occupational noise exposure, hearing loss on both public and private property, speech interference on both public and private property, audio interference on both public and private property, and sleep interference on ...
The main goal is to create an integrated noise management system. The Environmental Noise Directive (END) was created in the European Union to provide guidelines, laws, and standards in the management of environmental noise. The END has created noise mapping, noise action plans, and quiet areas to control environmental noise and the negative ...
Stricter legislation might reduce noise levels in the workplace. [26] Hearing protection devices, such as earmuffs and earplugs can reduce noise exposure to safe levels, but, instructions are needed on how to put plugs into the ears correctly to achieve potential attenuation. Giving workers information on their noise exposure levels by itself ...
Workers in general industry who are exposed to noise levels above 85 dBA are required by the Occupational Safety and Health Administration (OSHA) to be in a hearing conservation program (HCP), which includes noise measurement, noise control, periodic audiometric testing, hearing protection, worker education, and record keeping. Twenty-four ...