BSWA 308 - Page 121

BSWA 308/309 BSWA Technology Co., Ltd
119
Annex 7 Specification of 1/1 Octave Band Filter
1/1 octave filter was designed by the Butterworth filter and base 10 system. The specification
of each filter as the shown in the following figure:
-100.0
-90.0
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
0.1 1 10 100 1000
8Hz ~ 250Hz Octave Filter Response
8Hz 16Hz 31.5Hz 63Hz 125Hz 250Hz
dB
Hz
-100.0
-90.0
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
10 100 1000 10000 100000
500Hz ~ 16kHz Octave Filter Response
500Hz 1kHz 2kHz 4kHz 8kHz 16kHz
dB
Hz