2. Noise Pollution
• It is an unpleasant noise created by people or machines that
can be annoying, distracting, intrusive or physically painful
Sources
• Road traffic
• Jet planes
• Garbage
• Trucks
3. • Construction equipment
• Manufacturing processes
• Leaf blowers
Sound is measured in decibels(dB).
Impacts of noise
• Annoyance to the receptors
• Physiological effects- breathing amplitude, blood pressure,
heart beat rate, pulse rate
4. • Human performance- distracts the concentration
• Nervous system-causes pain, ringing in the ears, feeling of
tiredness
• Sleeplessness-loose concentration
Control at source
• Reducing the noise levels from domestic sectors
• Maintenance of automobiles
• Control over vibration
• Selection and maintenance of machinery
Control in the transmission path
• Installation of barriers
• Design of building
• Green belt development (planting of trees)
Using protective equipment
• Job rotation
• Reduced exposure time
• Hearing protection
