9/29/09 C-9
Infrasonic Frequency Response
824 Infrasound Response
0.0
10.0
20.0
30.0
40.0
50.0
0.1 1 10 100 1000
Frequency (Hz)
Attenuation (dB)
RTA SLM
LOG and ISM Mode Specifications
Time weighting: Slow, Fast, Impulse,
TWA and Peak
Frequency Weightings A, C and Flat (see table
on page C-7)
Dynamic range: > 115 dBA (Overload to
noise floor)
Linearity range: > 105 dBA
Pulse range: > 108 dBA
RMS noise floor: < 16 dBA typical (with
PRM902 and 377B41
mic)
Reference range: Normal range (0 dB
gain)
Exchange rates: 3, 4, 5, or 6 dB
Sample rate: 48,000 Hz
Peak rise time 50 S
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