NTi Audio XL2 Sound Level Meter - Manual (Page 127)

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STIPA
Commissioning New PA-Systems
New announcement systems are commissioned e.g. at public
areas prior the grand opening. Thus the actual ambient noise
caused by the public is not available yet during the STIPA mea-
surement. Here you may simulate the real-life condition with
ambient noise data enabled by one of the following modes:
Utilize a reference noise file, which might be applicable for •
the actual project
Measure the ambient noise at another similar project and -
store this as reference noise file.
Back on the actual project select the parameter
- Load with
the rotary wheel and press enter .
Select the reference noise file, which shall be utilized as
-
ambient noise correction for your STIPA measurements.
Edit actual noise data •
Select the parameter - Edit with the rotary wheel and
press enter .
Turn the rotary wheel to adjust the noise level.
-
Press enter - to select the next frequency band.
Next go to “STIPA Measurements”. Skip the next step “Mea-
sure Ambient Noise”.
Measure Ambient Noise
Position the microphone at the STIPA measurement point. •
Select • Measure (without any test signal presence).

The XL2 measures the ambient noise and displays the LEQ
octave band result.
You may edit the noise data.