Manual

20
SoundPressureLevel
In the LEVEL SPL mode the Minilyzer measures the integrated-
averaging level over time, the actual, minimum and maximum sound
pressure level.
NOTES • For this function a self powered microphone is
required. NTiAudio does recommend to use the
accessoryMiniSPL(fordetailsseeAccessories).
 • Prior the rst measurement the Minilyzer has to
be calibrated to the microphone specications.
As default the ML1 is calibrated according the
MiniSPL.
 • NophantompowerisavailableontheXLR-input.
a.SoundPressureLevelPanel
Fig 3.3 Sound Pressure Level Panel
Calibration
Minimum,
Maximum or
Actual SPL
Pause
Clock
Equivalent
Continious
Sound
Pressure
Level
Time
Weighting
SPL Bargraph with manual ranging
To enter the LEVEL SPL mode (Fig 3.3), select LEVEL -> SPL in the
measurement functions submenu.
For most of the ML1 applications, the sound pressure level
measurements require the use of the A-weighting lter. To prevent
wrong lter settings, causing wrong non-usable test results, the default
lter setting of the “LEVEL->SPL” mode is A-weighting (A-WTD).
Note: Each time the LEVEL SPL mode is selected the
A-weightinglterispre-setbydefault.
Measurement Functions