noise pollution
types of noise
industial
transport
Neighborhood
effects
leads to: contraction of blood vessels, making skin pale, excessive adrenaline in the blood steam
muscle contraction leading to nervous breakdown, tension
change in hormone levels, increases heart rate
health, work efficiency and behaviour
damage to the heart, brain, kidneys, liver. emotional disturbance
psychological and pathological disorders
affect the optical system
pupilary dilation, impairment of night vision, decrease in rate of colour perception
hypacusis, contracting peripheral blood vessel. sleeping disorder, breath and oulse frequency, affecting slumber deepness
ways to combat
noice berriers
traffic management
electric cars
land-use planning & design
low-noise tyres
quiet road surfaces
changing driving styles
building design
building insulation
brake blocks for trains
safe sounds
whisper, conversation, piano, washing machine
caution needed
traffic, power mower, violin, cinema, motocycle, noisy tpys
high risk
music concerts, fireworks, jet taking of
sound insulation and sound proofing of walls, floors
hearing protection devices, ear plugs
noise cansellation devices
quieter products and environment