Larson Davis 831 - Parameters Measured; Basic Sound Level Measurements

Model 831 Manual Parameters Measured 24-1
CHAPTER
24
Parameters Measured
This chapter describes the different acoustic parameters
which can be measured, displayed and stored using the
Model 831.
Basic Sound Level Measurements
Frequency Weighting
See “SLM Tab” on page 4-4 Each of the sound level parameters measured at one time
will be frequency weighted as set by the user from the
Settings tab. The frequency weighting for RMS and Impulse
averaged sound levels will be the same, selected
independent from the frequency weighting for peak
detection.
RMS and Impulse Weighting
The Model 831 measures RMS and Impulse averaged sound
level values using one of the following user-selected
frequency weightings:
• A-Weighting
• C-Weighting
• Z-Weighting
Peak Weighting
The Model 831 measures peak sound level values using one
of the following user-selected frequency weightings:
• A-Weighting
• C-Weighting
• Z-Weighting