Noise Pollution ppt

 NOISE POLLUTION


Sound

  • Sound is a vibration that propagates as a mechanical wave of pressure and displacement, through some medium (i.e. air or water).
  • Sound refers to only those vibrations with frequencies that are within the range of hearing for humans. 

Noise

  • Noise is basically any unwanted sound.
  • It is measured in dB units.

What is Noise Pollution ??

Any unwanted sound that penetrates the environment is noise pollution. In general noise pollution refers to any noise irritating to one’s ear which comes from an external source.  

Kinds of Noise Continuous

  • Variable or Intermittent
  • Impulse or Impact
Kind of noise which affect analysis
  • Chemical Noise
  • Instrumental Noise

Sources of Noise Pollution

  • Household Sources
  • Social Event
  • Commercial and Industrial Activities
  • Transportation 

Household Sources 

  • Food Mixer 
  • Grinder 
  • Vacuum Cleaner
  • Washing Machine 
  • Air conditioner
  • TV
  • Loud Speaker
  • Neighbor’s Barking Dog

Social Events

  • Places of Worship
  • Discos and Gigs
  • Parties
  • Markets where people sell goods with loudspeaker

Commercial and Industrial Activities

  • Printing Presses
  • Manufacturing Industries
  • Construction sites

Transportation

  • Road Traffic Noise
  • Aircraft Noise
  • Noise from Rail Roads

Causes of Noise Pollution

  • Poor Urban Planning
  • Sounds from Motor Vehicles
  • Car Alarms
  • Office Equipment
  • Factory Machinery
  • Construction Work
  • Barking Dogs
  • Sounds from Musical Instruments

Effects

  • Hearing Impairment
  • Interference with Spoken Communication
  • Decrease in Efficiency
  • Lack of Concentration
  • Sleep Disturbances
  • Breakage of Earth Barrier
  • Poor Quality of Crops
  • Damages Buildings, Bridges and Monument

Noise Control Techniques

  • Sound Insulation
  • Sound Absorption
  • Vibration Damping
  • Vibration Isolation
  • Urban Planning
  • Public Education and Awareness

THANK YOU


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