Installation manual
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Acoustics
(Noise-Emission
Levels)
Acoustical
data
is
intended
to
answer
requests
for
information
and
is
for
consultants
and
planners
requiring
the
data
to
help
predict
the
levels
of
acoustical
noise.
The
format
in
which
the
data
are
provided
conforms
to
the
standard
used
by
the
computer
industry.
The
measurement
procedures
used
to
acquire
the
data
conform
to
American
National
Standard
S12.10-1985
and
International
Standard
7779.
The
following
terms
are
used
to
present
acoustical
data
in
this
manual.
Term
Definition
LwAd
The
declared
sound
power-emission
level.
<
LpA
> m
The
mean
value
of
the
space-averaged
sound
pressure
emission
levels
at
the
one-meter
positions.
T
Prominent
discrete
tones
A-3