Noise_Pollution

Noise_Pollution - Noise
Pollution
 Noise
Pollution
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Unformatted text preview: Noise
Pollution
 Noise
Pollution
 •  Unwanted
human‐created
sound
that
disrupts
 the
environment
 •  Dominant
sources
are
from
transportation
 such
as
planes,
trains,
and
automobiles
 •  Noise
regulation
began
in
the
U.S.
with
the
 1972
Federal
Noise
Control
Act
 Effects
of
Noise
Pollution
 •  Normal
hearing
depends
on
 the
health
of
the
inner,
 middle,
and
outer
ear
 •  Three
kinds
of
hearing
loss:
 conductive,
sensory,
and
 neural
 •  Sensory
hearing
loss
is
 caused
by
damage
to
the
 inner
ear
and
is
most
 common
due
to
noise
 Effects
of
Noise
Pollution
 •  Noise
may
lead
to
other
problems
as
well
 – Cardiovascular
problems
with
accelerated
heart
 rate
and
high
blood
pressure
 – Gastric‐intestinal
problems
 – Decrease
in
alertness
and
ability
to
memorize
 – Nervousness
 – Pupil
dilation
 – Decrease
in
the
visual
field
 Effects
of
Noise
Pollution
 •  Longer
lasting
effects
may
include:
 – Insomnia
 – Nervousness
 – Bulimia
 – Chronically
high
blood
pressure
 – Anxiety
 – Depression
 Noise
Pollution
Control
 •  Roadway
noise
can
be
reduced
by
 using:
 – Noise
barriers
 – Limitations
on
vehicle
speed
 – Newer
roadway
surfaces
 – Limiting
time
for
heavy‐duty
vehicles
 – Computer‐controlled
traffic
flow
 devices
to
reduce
braking
 – Changes
in
tire
design
 Noise
Pollution
Control
 •  Aircraft
noise
can
be
reduced
through
 developing
quieter
jet
engines
and
 rescheduling
takeoff
and
landing
times
 •  Industrial
noise
can
be
reduced
through
new
 technologies
in
equipment
and
installation
of
 noise
barriers
 •  Residential
noise
such
as
power
tools,
garden
 equipment,
and
radios
can
be
controlled
by
 local
enforcement
 ...
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This note was uploaded on 12/29/2010 for the course ENGR 514 taught by Professor Snitter during the Fall '10 term at Oregon Tech.

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