This ppt. is based on environmental pollution

1. NOISE POLLUTION
Presented By
Mahesh kumar kumawat

2. CONTENTS
 1. Introduction
 2. Concept and Characteristics
 3. Sources of Noise pollution
 4. Effects of Noise pollution
 5. Control of Noise pollution

3. INTRODUCTION
 The word noise comes from the Latin word
“noxia” meaning "injury" or "hurt" .
 Sound that is unwanted or that disrupts the
activity or balance of human or animal life is
called noise.
 When there is lot of noise in environment, it
is termed as noise pollution.
 It is measured in dB units

4. INTRODUCTION
 The human ear can detect sounds in the
frequency range of about 20 to 20,000 Hz.
(The average is 200 - 10,000 Hz)
• decibel scale (dB) - a ratio of two
pressures
(Note : 10,000 microbars can cause
immediate physical damage.)
• Sound Pressure Level - expresses the
magnitude of volume or a sound (dB)

5. Characteristics of Noise
 Sound pressure
 Frequency
 Duration
 Time of the day
 Location

6. Sources of Noise
 1.Household Sources
 2.Social Events
 3.Commercial and Industrial Activities
 4.Transportation

7. Household Sources
 Food Mixer
 Grinder
 Vacuum Cleaner
 Washing machine and
Dryer
 Air Conditioner
 Cooler
 Television
 ipods and Earphones
 Loud speaker


8. Social Events
 Places of Worship
 Discos and Gigs
 Parties
 Markets where people sell goods with
loudspeaker

9. Commercial And industrial
 Printing Presses
 Manufacturing Industries
 Construction Sites

10. Transportation
 RoadTraffic Noise
 Aircraft Noise
 Noise from Rail Roads

11. Effects of Noise Pollution
 Effects on Human
 Effects on Animals
 Effects on Birds and Fish

12. Effects on Humans
 Hearing Impairment
 Interference with Spoken Communication
 Fatigue
 Sleep Disturbances
 Cardiovascular Disturbances

13. Diseases Caused by Noise
 High Blood Pressure
 Heart Attack
 Deafness
 Annoyance
 Stress
 Anxiety
 Reduced lung development
 Bronchitis
 Insomnia

14. Effects on Animals
 Damages Nervous system
 Altering Prey/predator detection
 Creates problems in Navigation
 They become Dangerous and Attacking
 Raise Metabolism
 Reduction of useable Habitat
 Death of Certain Species
 Genetic and Evolutionary Problems

15. Controls for Noise Pollution
 Control at Source
 Control in theTransmission Path
 Using Protective Equipment

16. Control at Sources
 Maintenance of Automobiles
 Prohibition on Usage of loudspeakers
 Selection of Machinery
 Maintenance of Machines
 Reducing the Noise Levels from Domestic Sectors
 Use of Economic instruments
 Fitting Silencers
 LowVoice Speaking

17. Control in Transmission Path
 Installation of Barriers
 Installation of Panels and Enclosures
 Green Belt development

18. Noise barrier: Highway in
Melbourne, Australia

19. Using Protection Equipment
 Providing Ear plugs & Earmuffs
 Soundproof Doors and Windows

20. Better Noise Control
 Active Noise ControlTechnology
 Sends out a SoundWave in Opposite Direction
 Berlin Park- Sound Absorbing Wall