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ADASH
Octave Analysis
The Octave Analysis module is a subset of the Analyzer module. It enables only sound measurements. Unlike
the Analyzer, the Octave analysis enables the exponential averaging.
Measurement settings
Type
octave spectrum
sound level
The sound pressure level in dB is defined as 20log
equivalent sound level
When during time interval the sound level changes, then the equivalent sound level is the average sound level
of the whole interval.
Channel
1 - 4
Unit
The unit of measurement ( has to be compatible with sensor settings)
Resolution
1/1, 1/3, 1/12, 1/24
Frequency Range
high
16 - 16000 Hz for noise measurements (central octave frequencies)
low
1 - 1000 Hz for vibrations
Frequency Weighting
none, A, B, C, D
The human ear has the subjective characteristics known as the loudness. It is the function of sound intensity
and frequency. For example the 20Hz pure tone with sound level 20dB would be clearly audible. The 100Hz
For further technical and contact information visit
(p
/p
), p
=0,00002 Pa (p is sound pressure)
10
RMS
0
0
130
www.adash.com
Adash 4500 – VA5Pro
or email: info@adash.com
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