P R O D U C T DATA

Data Explorer
for XL2 and XL3 Sound Level Meter
The Data Explorer is a PC-based software application with a powerful data processor for easy
and fast analysis of sound level measurement data. Visualize, analyze and control millions ofdata points with this tool that is dedicated to acoustic consultants and noise measurement
professionals. It provides a convenient way to view and manage your data and quickly createcustomized reports.
Key Features• Data visualization with fast zoom and pan• Audio playback synchronized to graph• Markers with on-the-fly calculation• Automated tonal and impulsive marker generation• Rating level Lr and percentile levels Ln

www.nti-audio.com

Dec 22, Page 1 / 4

P R O D U C T DATA

Flexible Data Analysis
A drop-down menu allows you to select the individual levels displayed in the chart. Select one or more, or a range of one-thirdoctave bands for display against time. The fast zoom and pan response over the entire data log period allows for quick data analysis, even with very large data sets.

Level Statistics
The software provides a detailed statistical analysis of the loggedsound level measurement data. The percentiles can be calculated
for wide band levels as well as 1/1 and 1/3 octave band levels.

www.nti-audio.com

Page 2 / 4

P R O D U C T DATA

Tonality and Impulsiveness Detection
Generate automated markers based on levels, tones, impulses or time periods in accordance with the ISO 1996:2-2017, BS4142:2014, DM 16 marzo 1998 and other standards. Each marked
period may be exported into a new project for further evaluationby third parties.

Calculate the FFT based on a recorded audio file for an objective
audible assessment of tones in noise in accordance with the engineering methods described in ISO 1996:2-2017, DIN 45681 andBS 4142:2014.

Measurement Report

NTi Traffic Noise Demo 2 (Processed)
Start:

2014-01-17 11:52:48

End:

2014-01-17 12:17:48

This project demonstrates the basic features of the XL2 Data Explorer Version 1.0
Measurements used for this demo were recorded near a street and a train line in Schaan, Liechtenstein.
The text of this box as well as the logo above may be edited in the project properties window.
Noise sources which are not directly caused by cars as well as the sound of car horns were excluded from the result.

Complete your professional reports with customized titles andcomments. The Data Explorer automatically adds relevant header
data such as the measurement date, calibration information, instrument setup etc., and compiles a tailored report. Simply add
your own company logo.

LAeq_dt
LAeq
Cursor: 2014-01-17 12:02:30 LAeq_dt=78.3 dB LAeq=61.5 dB

Evaluation
Cursor: 2014-01-17 12:02:30 Frequency=1250 Hz LZeq=74.9 dB
Hardware ConfigurationDevice Info:

Contact us for an evaluation.

XL2, SNo. A2A-02868-D2, FW2.70

Mic Sensitivity: 39.9 mV/Pa (from M2230, S/N: 2601, Factory adjusted )Range:

0 - 100 dB

www.nti-audio.com

Page 3 / 4

P R O D U C T DATA

Specifications
Supported Data Types• XL2 or XL3 Sound level meter• Broadband, 1/1 and 1/3 octave band data
• Audio data playback aligned to graphs

Data Handling

Optimized for fast analysis of big data (millions of points)

Markers• 11 different marker types available• Exclude and event marker with on-the-fly calculations• Overlapping markers of same type are merged automatically• Notes

Percentiles• Percentiles for wide band, 1/1 and 1/3 octave spectrum• Simultaneous percentile calculation of full spectrum• Flexible setting from 0.1% to 99.9% @ class width = 0.1 dB

Calculated Levels• LAFT5eq – LAeq
• LAIeq – LAeq
• LCeq – LAeq
• LAFmax – LAeq

Audit Intervals

1, 5, 10, 15, 30, 60 minutes

Automated MarkerGeneration• Level• Pure Tone (based on RTA levels)» ISO 1996:2-2017, BS 4142:2014, DM 16 marzo 1998
» Leq – Max or Leq – Mean (neighbors)» User-defined minimum tone duration» Distinguishing between small and prominent tones• Impulsive Sound (based on broadband level)» LAIeq – LAeq, LAFmax – LAeq, DM 16 marzo 1998
» LAImax – LAFmax, LAImax – LASmax• TimeFFT• Pure Tone (based on narrow band FFT)
» DIN 45681:2006, ISO 1996:2-2017, BS 4142:2014

Day-Night Levels• Lden, Ldn, Lday, Levening, Lnight with user-defined penalty

Rating Level• DIN 45645-1/-2, BS 4142:2014, DM 16 marzo 1998
• User-defined measurement periods and reference time interval• Marker and reference time interval based correction• Counter and duration of selectable markerReporting• Data export to MS Excel and XPS report

Licensing• “Data Explorer 365” or “Data Explorer Option“ enables the data import into Data Explorer software.
• Data Explorer can be installed on multiple computers.

Compatibility• Windows XP, Vista, 7, 8 Pro, 8.1 Pro, 10• Video board with a shader-model 3.0 or higher (DirectX 9.0 c)

Order Information• NTi Data Explorer Option, NTi Audio # 600 000 430• Data Explorer 365, NTi Audio # 600 000 431• LAImax – LAFmax• LAImax – LASmax• LAE• Sum of frequency bands

All information is subject to change without notice.

www.nti-audio.com

Page 4 / 4