Government Engineering
College Rajkot
Environment Science
TOPIC :-Noise pollution
NOISE POLLUTION
SUBJECT:
PREPARED BY:
ENVIRONMENTAL SCIENCE
KISHAN RANA
SOHAM PRAJAPATI
NISHANT JANI
PIYUSH VADSAK
GOVERNMENT ENGGENEARING COLLAGE
Noise Pollution
CONTENT
1
3
2
Introduction
of Noise
Pollution
Sources of
Noise
pollution.
4
Effects of
Noise
pollution
Control of
Noise
pollution
01
Introduction of
Pollution and
noise pollution
 Pollution is the introduction of harmful materials
into the environment.
 These harmful materials are called pollutants.
 Pollution is caused by human activity.
 There are many types of pollution in our world but
one of the most common type of pollution in our
world is Noise pollution.
What is Noise pollution ?
 Noise is a one type of sound which is
undesirable to hear.
 Noise pollution can be defined as
unwanted sound.
 Noise measured by sound level meter.
Difference Between Sound and Noise
Sound
Noise
1. It is pleasant to hear.
2. It has a regular period.
1. It is unpleasant to hear.
2. It has no regular period
motion.
3. It has constant pitch.
3. It has constant varying
pitch.
4. Unit= decibel(dB)
4. unit= hertz(Hz)
SOUND MEASURING
DEVICE SOUND
LEVEL METER
 This device is known as a sound level meter.
 This device measure the Noise by using
frequency.
 This device measure Noise in the Unit of
decibel denoted by dB.
 The basic parts of sound level meter include a
microphone, amplifiers, weighting system and
display reading system.
02
Source of
Noise Pollution
House Hold
Sources
Catering and
night life
Social
Events
SOURCE OF
NOICE
POLLUTION
Traffic
Vehicles
Ship Noise
Commercial & Industria
Activities
Transportation
Community Noise
Household Sources
 Gadgets like food mixer, grinder, pressure cookers, coolers,
air- conditioners, exhaust fans, vacuum cleaners, dryer and
washing machines, can be very noisy and injurious to health.
 Other include loud speakers of sound systems and Tv’s, iPods
and ear phones.
 Another example may be your neighbor's dog barking all
night everyday at every shadow it sees, disturbing everyone
else in the apartment.
Social Events
 Place of worship ,discos and gigs parties and
other social events also create a lot of noise for
the people living in that area.
 In many market areas, people sell with loud
speakers, other shout out offers and try to get
customers to buy their good.
 It is important to note that whey these events are
not often, then can be called “Nuisance” rather
than noise pollution.
Commercial & Industrial Activities
 Most of the manufacturing companies and
worldwide industries use big machines that can
produce a large amount of noise.
 Apart from that, different equipment such as
exhaust fans, compressors, grinding mills, and
many more participate in producing big sound.
 The wide-ranging exposure to high levels of
sound can damage the hearing abilities of the
workers.
03
Effects of noise
pollution
Loss of hearing
Working
efficiency
EFFECT OF
NOISE
POLLUTION
Interference with communication
Heath effects
Annoyance
A
Loss of hearing
 Loud noise can damage cells and membranes
in the cochlea.
 Listening to loud noise for a long time can
overwork hair cells in the ear, which can cause
these cells to die.
 The hearing loss progresses as long as the
exposure continues.
 Harmful effects might continue even after
noise exposure has stopped.
B
Health effects
 Noise pollution adversely affects the lives of
millions of people.
 Problems related to noise include stress related
illnesses, high blood pressure, speech
interference, hearing loss, sleep disruption, and
lost productivity.
 Noise is directly Effected our barin. Some time
absorb this effect.
C
Interference with
communication
 A person face the problem of trying to understand another
person talking to another person in an environment with high
background noise level.
 Background noise directly affected the efficiency of offices,
schools and other place where communication is of vital
importance.
 The maximum acceptable level of noise under such condition
is 55dB.
 Background noise level of 70dB is considered very noise.
D
Working efficiency
 Efficiency directly decreased whenever a
person is working in the noisy environment.
04
CONTROL OF NOISE
POLLUTION
 Proper maintenance and lubrication of machines
can reduce noise.
 Sources of Noise pollution like heavy vehicles ,
airports, Noise producing industries etc. should be
located away from populated area.
 Silence zones should be created around residential
areas, educational institution and hospitals.
 Noisy machines should be installed in sound proof
chambers.
 Planting more trees having bored leaves which
can absorb sound.
 Use of loud-speaker and amplifiers should be
restricted to a fixed intensity and fixed hours of
the day.
 Restricting the unnecessary horn blowing by laws.
 Occupational exposure to Noise can be reduced
by using protective devices such as ear plugs.
Role of Every Individual in Prevention
of Pollution
 There are lots of environmental problem caused by
human actions on the environment.
 We must recognize that each of us is individually
responsible for quality of the environment we live in.
 Our personal actions worsen or improve the quality
of our environment.
Some of the following suggestions to
decreases the pollution of
environment
 At least all people planting one trees, plant are reduce air
pollution and noise pollution.
 Use eco-friendly products.
 Reduce your dependency on fossil fuel especially coal or
oil.
 Try to avoid asking plastic bags when you buy vegetables
or glossary, intend use cloth bags.
 Save electricity .
 Use mass transportation system . For short-visits use bicycle
or go on foot and decrease the use to automobile.
THANK YOU