Solutions and Remedies for Noise Pollution Planting bushes and trees in and around sound generating sources is an effective solution for noise pollution. Urban Planning, Public Education and Awareness Regular servicing and tuning of automobiles/ machinery can effectively reduce the noise pollution. Alteration of roadway surface texture. Buildings can be designed with suitable noise absorbing material for the walls, windows, and ceilings. Soundproof doors and windows can be installed to block unwanted noise from outside. Factories and industries should be located far from the residential areas. Workers should be provided with equipment such as ear plugs and earmuffs for hearing protection. Control in the Transmission Path, Control at Source, Control over Vibrations Exposure Reduction Enclosure of machines can reduce noise levels at its source very effectively. Leakage where pipes pass through walls as well as acoustic leaks between walls, screens or enclosures, can produce large variations in the attenuation achieved. It is therefore important to seal air gaps carefully Putting major noise sources at one place & separating it from quieter area. Using acoustic barriers, sound absorbing linings & sound insulating partitions. Complete or partial enclosure of noisy equipment. Providing silencers on the intake as well as exhaust side of flow machines, like blowers, fans etc. Insertion of damping material between machine bases and foundations and use of anti vibration mountings. Regulations should be imposed to restrict the usage of play loudspeakers in crowded areas and public places. International Co-operation for Free 1000 PPT Please visit www.realcopowerprojects.com

1. Noise Pollution
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2. About Noise
• Noise is unwanted sound
• Sound is the quickly varying pressure wave traveling through a medium. When
sound
• travels through air, the atmospheric pressure varies periodically.
• The number of pressure variations per second is called the frequency of sound, and is
measured in Hertz (Hz) which is defined as cycles per second
• Noise intensity is measured in decibel units.
• The decibel scale is logarithmic; each 10-decibel increase represents a tenfold increase
in noise intensity.
• Human perception of loudness also conforms to a logarithmic scale;
• A 10-decibel increase is perceived as roughly a doubling of loudness. Thus, 30
decibels is 10 times more intense than 20 decibels and sounds twice as loud; 40
decibels is 100 times more intense than 20 and sounds 4 times as loud; 80 decibels is 1
million times more intense than 20 and sounds 64 times as loud.

3. Physics Of Hearing
Hearing is a complex process that involves many parts of the ear working together to
convert sound waves into information that the brain understands and interprets as sound.

4. NOISE POLLUTION
• Sound that is unwanted or disrupts one’s quality
of life is called as noise. When there is lot of
noise in the environment, it is termed as noise
pollution.
• Sound becomes undesirable when it disturbs the
normal activities such as working, sleeping, and
during conversations.
• It is an underrated environmental problem
because of the fact that we can’t see, smell, or
taste it.
• World Health Organization stated that “Noise
must be recognized as a major threat to human
well-being”

5. Sources of Noise Pollution
•Transportation systems are the main source
of noise pollution in urban areas.
•Industrial noise also adds to the already
unfavorable state of noise Pollution. Boilers,
Generators, Pneumatic equipment, Air
conditioners, Pump, Fans, Turbines,
Machines add to the existing noise pollution.
•Construction of buildings, highways, and
streets cause a lot of noise, due to the usage
of Air compressors, Bulldozers, Loaders,
Dump Trucks, and Pavement breakers.

6. EFFECTS OF NOISE

7. Effects of Noise Pollution
• Hearing Loss ,Productivity loss
• High Blood Pressure/Hypertension
• Stress Related illness,Insomnia
• Labored breathing,Altered brain chemistry
• Permanent damage in voice
• Sleep Disturbances,Color Blindness
• It can also cause memory loss/Forgetfulness
• Severe depression and Panic attacks
• Damage Physiological and Psychological health.
• Annoyance and Aggression,Tinnitus
• Miscarriages and abortions in women
According to the EPA India, there are direct links between noise and health.
Also, noise pollution adversely affects the lives of millions of people.

8. Effects of Noise Pollution

9. EFFECT ON VEGETATION,POOR
QUALITY OF CROPS
Now is well known to all that plants are similar to human being. They are also as
sensitive as man. There should be cool & peaceful environment for their better
growth. Noise pollution causes poor quality of crops in a pleasant atmosphere.

10. Effect on Animals
• Noise pollution damages the nervous system of animal.
• Altering Prey/predator detection
• Creates problems in Navigation
• Animal looses the control of its mind.They become dangerous and Attacking.
• Raise Metabolism
• Reduction of useable Habitat
• Death of Certain Species
• Genetic and Evolutionary Problems
• High noise levels may interfere with the natural cycles of animals, including
feeding behavior, breeding rituals and migration paths.

11. Effect on Animals

12. Effects on Non-living things
• Causes cracks in Structure
• Loud noise is very dangerous to buildings, bridges,Stones,Earth,Land and monuments.
It creates waves which struck the walls and put the building in danger condition.
• Breaking of Glass, China clay , mud vessels due to sudden loud noise
• Damage to furniture – ages faster
• Damage to paintings and antique pieces

13. Dangerous Noise Levels
In general, noise levels below 85 dBA (decibels) are considered safe, while anything
above 85 dBA will cause hearing loss. According to the Center for Hearing and
Communication, the volume (dBA) and the length of exposure to the sound will tell
you how harmful the noise is. The louder the noise, the less time required before
hearing loss will occur. For reference, 0 decibels is the softest sound a person can
hear with normal hearing, while 10 dBA is regular breathing. Rainfall is 50
decibels, while a normal conversation is 60. Beyond the level of safety at 110 would
include something like shouting in someone's ear or thunder at 120 decibels. Want
to know more? See the following chart for an inclusive list.

14. Home Work Recreation
50 refrigerator
50 – 60 electric toothbrush
50 – 75 washing machine
50 – 75 air conditioner
50 – 80 electric shaver
55 coffee percolator
55 – 70 dishwasher
60 sewing machine
60 – 85 vacuum cleaner
60 – 95 hair dryer
65 – 80 alarm clock
70 TV audio
70 – 80 coffee grinder
70 – 95 garbage disposal
75 – 85 flush toilet
80 pop-up toaster
80 doorbell
80 ringing telephone
80 whistling kettle
80 – 90 food mixer or processor
80 – 90 blender
80 – 95 garbage disposal
110 baby crying
110 squeaky toy held close to the ear
135 noisy squeeze toys
40 quiet office, library
50 large office
65 – 95 power lawn mower
80 manual machine, tools
85 handsaw
90 tractor
90 – 115 subway
95 electric drill
100 factory machinery
100 woodworking class
105 snow blower
110 power saw
110 leaf blower
120 chain saw, hammer on nail
120 pneumatic drills, heavy machine
120 jet plane (at ramp)
120 ambulance siren
125 chain saw
130 jackhammer, power drill
130 air raid
130 percussion section at symphony
140 airplane taking off
150 jet engine taking off
150 artillery fire at 500 feet
180 rocket launching from pad
40 quiet residential area
70 freeway traffic
85 heavy traffic, noisy restaurant
90 truck, shouted conversation
95 – 110 motorcycle
100 snowmobile
100 school dance, boom box
110 disco
110 busy video arcade
110 symphony concert
110 car horn
110 -120 rock concert
112 personal cassette player on
high
117 football game (stadium)
120 band concert
125 auto stereo (factory
installed)
130 stock car races
143 bicycle horn
150 firecracker
156 cap gun
157 balloon pop
162 fireworks (at 3 feet)
163 rifle
166 handgun
170 shotgun
Decibel Levels of Common Noise Sources

15. Sound pressure for known sounds

16. Decibel Comparison Chart

17. Noise permissible standards
Category of Area/Zone Limits of dB
Day Time Night time
Industrial Area 75 70
Commercial area 65 55
Residential area 55 45
Silence zone 50 40
The Central Pollution Control Board Permissible limit
Noise standards for automobiles
Category of Vehicle Limit in dB
Motorcycle, scooters and three wheelers. 80
Passenger Cars 82
Passenger or commercial vehicles up to 4 MT 85
Passenger or commercial vehicles above 4 MT and up to 12 MT 89
Passenger or commercial vehicles exceeding 12 M 91
Noise standards for Domestic Appliances/ Construction Equipments
Category of Domestic Appliances/ Construction Equipments Limit in dB
Window air conditioners of 1 tonne to 1.5 tonne 68
Air Coolers 60
Refrigerators 46
Diesel Generator for domestic purposes 85-90
Compactors(rollers),Front loaders, Concrete mixers, Cranes (movable), Vibrators
and Saws
75

18. GUIDELINES SUGGESTED BY OCCUPATIONAL
SAFETY AND HEALTH ADMINISTRATION (OSHA)
FOR INDUSTRIAL NOISE EXPOSURE
Level Exposure Duration
(Hrs.)
Maximum Allowable
Level dB (A)
8 90
6 92
4 95
3 97
2 100
1.5 102
1 105
0.5 110
<0.25 115

19. Solutions/Remedies for Noise Pollution
• Planting bushes and trees in and around sound generating sources is an effective solution for
noise pollution.
• Urban Planning, Public Education and Awareness.
• Regular servicing and tuning of automobiles/ machinery can effectively reduce the noise pollution.
• Alteration of roadway surface texture.
• Buildings can be designed with suitable noise absorbing material for the walls, windows, and
ceilings.
• Soundproof doors and windows can be installed to block unwanted noise from outside.
• Factories and industries should be located far from the residential areas.
• Workers should be provided with equipments such as ear plugs and earmuffs for hearing
protection.
• Control in the Transmission Path, Control at Source, Control over Vibrations.
• Exposure Reduction
• Enclosure of machines can reduce noise levels at its source very effectively.
• Leakage where pipes pass through walls as well as acoustic leaks between walls, screens or
enclosures, can produce large variations in the attenuation achieved. It is therefore important to
seal air gaps carefully
• Putting major noise sources at one place & separating it from quieter area.
• Using acoustic barriers, sound absorbing linings & sound insulating partitions.
• Complete or partial enclosure of noisy equipment.
• Providing silencers on the intake as well as exhaust side of flow machines like blowers, fans etc.
• Insertion of damping material between machine bases and foundations and use of anti vibration
mountings.
• Regulations should be imposed to restrict the usage of play loudspeakers in crowded areas and
public places.
• International Co-operation

20. Solutions/Remedies for Noise Pollution

21. Solutions/Remedies for Noise Pollution

22. Master of Silence

23. Conclusion…
• To protect healthy life, there is an
urgent need to come up with an
enforceable law on Noise
Pollution in each Location.
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THANK YOU………….
PPT Prepared By
Dr.Hrutuja R.Ghone &
Mr.Ameya G.Ghone
1000 more PPT Please visit www.realcopowerprojects.com