American Journal of Audiology,
Journal Year:
2023,
Volume and Issue:
33(1), P. 112 - 121
Published: Nov. 22, 2023
This
study
aimed
to
reveal
occupational
effects
on
the
hearing
of
hot
air
balloon
(HAB)
pilots
and
examine
relationship
between
duration
experience
these
effects.This
included
31
male
HAB
a
control
group
32
participants.
Tympanometry,
eustachian
tube
function
(ETF)
test,
pure-tone
audiometry,
transient
evoked
otoacoustic
emission
(TEOAE)
tests
were
performed.Pure-tone
audiometry
results
significantly
worse
at
125,
500,
6000
Hz
in
right
ear
4000,
left
than
group.
Although
tympanometry
evaluation
parameters
did
not
differ
groups,
ETF
test
was
controls
bilaterally.
TEOAE
1000,
2000,
4000
controls.
There
significant
positive
correlation
for
6000,
8000
thresholds.
For
ear,
showed
3000,
Hz.
When
evaluated,
negative
found
ear.In
pilots,
whom
dysfunction
is
quite
common,
noise
high
altitude
affected
hearing,
especially
low
frequencies,
be
associated
with
Physics of Fluids,
Journal Year:
2024,
Volume and Issue:
36(8)
Published: Aug. 1, 2024
Urban
air
mobility
(UAM)
aircraft
has
emerged
as
the
solution
to
growing
traffic
congestion
problems
and
increasing
demand
for
efficient
mobility.
However,
noise
pollution
is
one
of
major
concerns
gaining
social
acceptance
UAM
being
designed
future
transport
in
highly
populated
urban
areas
at
low
altitudes.
The
generated
by
can
exceed
acceptable
level
due
ground
effect
when
it
approaches
a
vertiport.
This
study
investigates
effects
on
aerodynamic
performance
side-by-side
full
configuration
utilizing
coupled
vortex
methods
acoustic
analogy,
respectively.
simulation
results
show
that
fuselage
directly
influence
loads
rotor
blade,
wake
structure,
signature,
directivity.
As
ground,
sound
pressure
(SPL)
increases,
impact
becomes
more
noticeable,
especially
above
system,
stronger
upwash
airframe
ground.
Moreover,
most
pronounced
characteristics
high-frequency
tonal
noise,
overall
(OASPL)
aft
quadrant
higher
than
forward
loading
rear
plane.
hemisphere
analysis
maximum
OASPL
increases
3
dBA
altitude
gets
closer
IGI Global eBooks,
Journal Year:
2025,
Volume and Issue:
unknown, P. 95 - 118
Published: March 14, 2025
Aerogels,
renowned
for
their
low
density
and
high
porosity,
have
garnered
significant
attention
in
the
realm
of
acoustic
thermal
insulation
due
to
exceptional
properties.
In
insulation,
aerogels
serve
as
effective
sound
absorbers,
mitigating
noise
transmission
by
dissipating
energy
through
intricate
nanoporous
structure.
Moreover,
exhibit
promising
potential
applications.
With
conductivity,
impede
heat
transfer,
thereby
enhancing
efficiency
buildings
industrial
processes.
This
study
underscores
multifaceted
utility
advancing
technologies,
offering
sustainable
solutions
control
management
diverse
Aerospace,
Journal Year:
2024,
Volume and Issue:
11(3), P. 199 - 199
Published: March 1, 2024
Aviation
is
a
vital
modern
transportation
sector
connecting
millions
of
passengers
globally.
Sustainable
aviation
development
holds
substantial
community
benefits,
necessitating
effective
management
its
environmental
impacts.
This
paper
addresses
the
need
for
an
accurate
and
cost-effective
aircraft
noise
monitoring
model
tailored
to
non-towered
general
airports
with
limited
resources
official
air
traffic
data
collection.
The
existing
literature
highlights
heavy
reliance
on
from
control
facilities
in
prevailing
modeling
solutions,
revealing
disparity
between
real-world
constraints
optimal
practices.
Our
study
presents
validation
three-stage
framework
centered
low-cost
transponder
unit,
employing
innovative
experimental
analytical
approach
assess
model’s
accuracy.
An
economical
Automatic
Dependent
Surveillance-broadcast
(ADS-B)
receiver
deployed
at
Purdue
University
Airport
(ICAO
Code:
KLAF)
estimate
levels
using
developed
approach.
Simultaneously,
physical
sound
meter
positioned
KLAF
capture
actual
acoustic
levels,
facilitating
direct
comparison
modeled
data.
Results
demonstrate
that
accurately
identifies
events
average
error
4.50
dBA.
suggests
viability
our
as
affordable
solution
airports.
In
addition,
this
discusses
limitations
recommendations
future
research.
Noise Mapping,
Journal Year:
2024,
Volume and Issue:
11(1)
Published: Jan. 1, 2024
Abstract
In
densely
populated
cities,
residents
living
near
aerodromes
may
experience
heightened
exposure
to
aircraft
noise.
With
hybrid
work
arrangement,
authorities
have
observed
a
rise
in
the
number
of
complaints
filed
by
affected
view
this
problem,
urban
planners
are
now
placing
even
more
emphasis
on
exploring
solutions
that
can
manage
noise
new
and
existing
residential
areas.
To
achieve
objective,
usually
rely
external
acoustic
consultants
generate
maps
using
commercial
software.
However,
need
quickly
evaluate
potential
issues
neighbourhood
so
management
strategies
be
brainstormed
advance.
article,
we
present
development
benchmarking
package
designed
easily
via
simplified
procedures
reduced
amount
input
data,
with
acceptable
accuracy
results.
These
benefits
distinguish
our
developed
from
Our
was
eventually
integrated
into
an
in-house-developed
unified
environmental
modelling
tool
aims
help
design
liveable
sustainable
towns
intuitive
quick
manner.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: March 25, 2024
Abstract
In
the
present
study,
an
attempt
has
been
made
to
assess
impact
of
vehicular
noise
upon
3-wheeler
tempo
drivers
and
know
whether
there
is
any
relationship
between
hearing
loss
cumulative
exposure.
For
this
purpose,
(Exposed
group)
non-commercial
light
motor
vehicle
car
(Unexposed
were
chosen
as
study
subjects.
Three
traffic
routes
selected
level
during
waiting
running
time
in
exposed
unexposed
groups.
Among
all
three
routes,
highest
mean
(L
eq
)
was
observed
on
Chowk
Dubagga
route
for
en-route
measurement.
It
measured
84.13
dB(A)
86.36
periods
7.68
±
3.46
31.05
6.6
min,
respectively.
Cumulative
exposure
found
be
significantly
different
(
p
<
0.001)
age
groups
drivers.
Audiometric
tests
have
performed
over
both
The
regression
analysis
done
keeping
among
dependent
variable
(years)
Energy
(Pa
2
Hrs)
independent
using
criteria
definitions,
i.e.,
World
Health
Organization,
National
Institute
Occupational
Safety
(NIOSH),
Administration
criteria.
these
criteria,
NIOSH
criterion
best
explained
variables.
could
explain
total
variation
by
quite
well,
68.1%.
finding
showed
a
linear
exposures
group's
(dB),
increases
with
increasing
dose.
Based
findings,
two
model
equations
developed
identify
safe
unsafe
levels
time.
Buildings,
Journal Year:
2023,
Volume and Issue:
13(1), P. 143 - 143
Published: Jan. 5, 2023
Noise
is
the
number
two
environmental
health
risk
in
Europe.
With
majority
of
world’s
inhabitants
residing
ever-growing
cities,
urban
noise
impacts
an
increasing
people.
Urban
airports
significantly
contribute
to
noise,
and
their
spatial
effects
far
exceed
boundaries.
While
indoor
acoustic
mitigation
architecture
growingly
addressed
using
parametric
tools,
there
limited
research
on
mitigating
with
digital
means
through
landscape
design.
Moreover,
a
lack
methods
for
ameliorating
ground-forming.
To
address
this,
this
paper
contributes
novel
method
integrating
analysis
landscape-forming.
The
includes
collecting
on-line
on-site
data,
developing
alternative
formations
evaluating
design
alternatives
within
single
environment.
This
was
applied
by
examined
case-study
site
adjacent
Munich
Airport.
Three
landform
designs
park
are
developed,
performance
compared.
results
indicate
possibility
considerations
architecture,
provides
step-by-step
guide
doing
so.
capacity
also
promotes
long-term
goal
grounds.
