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2).
24000btu/h
Octave band center frequency
+
Hz
,
S
ou
nd
pr
es
sur
e
le
ve
ldB
+
0dB=0
.0
002
-
ba
r
,
Audibility limits of
continuous white
sound
Octave band center frequency
+
Hz
,
S
ou
nd
pr
es
su
re
le
ve
ld
B
+
0d
B
=0
.0
00
2
-
ba
r
,
Audibility limits of
continuous white
sound
Ceiling
Floor
3).
36000btu/h
Octave band center frequency
+
Hz
,
S
ou
nd
pr
es
sur
e
le
ve
ldB
+
0dB=
0.
0002
-
ba
r
,
Audibility limits of
continuous white
sound
Octave band center frequency
+
Hz
,
S
ound
pr
es
sur
e
le
ve
ldB
+
0dB
=0
.00
02
-
ba
r
,
Audibility limits of
continuous white
sound
Ceiling
Floor
4).
48000btu/h 60000btu/h
Octave band center frequency
+
Hz
,
S
ound
pr
es
sur
e
le
ve
ldB
+
0dB
=0
.0002
-
ba
r
,
Audibility limits of
continuous white
sound
Octave band center frequency
+
Hz
,
S
oun
d
pr
es
sur
e
le
ve
ldB
+
0dB=0
.00
02
-
ba
r
,
Audibility limits of
continuous white
sound
Ceiling
Floor