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5.7 Octaafband filters
F
e r
q
u
e
n
y c
Reference attenuation
Operative linearity range
Octave band nominal central frequencies
Nominal central frequency
5.8 Meetbereik (oktaafband spectrum analyser)
L
Function
T
for P-05:
Measurement range (with linearity error lower than 0.4 dB):
Octave bands with nominal central frequency
Lower than 63 Hz:
From 63 Hz to 8 kHz:
Higher than 8 kHz:
The noise (electrical + thermic of the microphone) is, as a minimum,
10 dB lower than the lower limit of the measurement range.
e
a v
u l
t a
o i
n
s
s y
e t
m
31.5 Hz
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
8 kHz
16 kHz
Upper limit:
Lower limit:
Upper limit:
Lower limit:
Upper limit:
Lower limit:
The same as the measurement
range
Exact base 10 frequency
31.623
63.096
125.89
251.19
501.19
1,000
1,995.3
2,511.9
7,943.3
15,849
38
B
a
s
e
1
0
0 dB
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
137 dB
30 dB
137 dB
15 dB
137 dB
20 dB
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