A flexible project oriented PC software package for presenting and post processing environmental noise data from Norsonic instruments. Each project may contain all kind of raw and post processed noise and weather data, audio recordings, voice notes, Microsoft® Word or Excel reports and other files such as digital photos and pdf-text files.

It can quickly generate a single report or make advanced evaluations and complex project reports.


  • Flexible and versatile user-interface
  • Evaluation of industrial noise
  • Evaluation of rail and road traffic noise
  • Evaluation of residential noise
  • Evaluation of multiple measurement files simultaneously
  • Direct import or file read-in from Norsonic instruments
  • Displays frequency, time-profile, FFT and AC views of the measurement data
  • Insert and edit markers to recognize noise sources
  • Replay of audio recordings with dynamic cursor and marker insert features
  • Post processed event analysis with marker insert feature
  • Post processed calculations on selected pre-marked sections
  • Rating calculations according to national standards
  • Pre-defined project reports
  • L(t) view of calculated functions
  • L(f) view difference calculations
  • User-defined project reports
  • Supports weather data
  • Online view of measured values from several instruments in conjunction with Nor1022 NorMonit
  • New MS’ Excel template based NorReport measurement report feature
  • Sophisticated 3D and Spectrogram views
  • Automated multi-views of long-term measurements in pre-selected detailed sub-periods (24 x 1 hour views of a 24h measurement)
  • Overlay marker
  • Simultaneously transfer of all views to Word
  • Connected cursors Lt/Lf views
  • Calculation of difference between selectable functions


The possibility to use Excel macros can be quite useful, but there are quite strict limitations in their use, as any minor change of or missing data in one particular measurement file will force the macro to crash. It cannot, therefore, be guaranteed that later versions of NorReview will run existing macros without the need for modifications. To overcome these limitations NorReview offers an alternative solution for users who have no personal experience with macros.

The add-in tools facility includes pre-designed routines for presentation and calculations to your NorReview package. These tools are made in professional software languages and offer much better operational security than macros. These optional add-in tools are designed for more advanced use of the NorReview package and to perform predefined functions in line with different international or national requirements. Extensive marker editing, event analysis, in-depth calculations on sub-sections, frequency analysis and simultaneously evaluation of multiple measurement files are possible using these add-in features. Rating calculations such as the Lden-calculation, the German TA-Lärm 1998, and the Italian DM 16/3/98, may also be added.

The previously mentioned Summary Reports is a quick and simple way of making pre-defined reports. However, many professional users have a need for detailed reports according to their user-defined templates. This is possible using the NorReport ad-in tool.

This means that each individual customer can tailor the NorReview package to perform in accordance with the local needs.

Option 1: Event & Calculations

Edit markers

Most Norsonic instruments offer the possibility to enter markers along the level versus time profile reports. These markers are automatically displayed in the L(t) Views in the NorReview software package.

In many cases, it is desirable to edit these markers. Perhaps the markers are slightly wrong in their position along the time-axis when compared to the actual time axis, or additional markers are required. Maybe, some of the original markers should be deleted, the length adjusted, or the names of the marker need to be enhanced. Even a dedicated text-note may be inserted. All these adjustments are available when the option 1 of NorReview is installed.

Clicking the mouse on the displayed marker enables the editing function. A light-blue area will then be displayed behind the L(t) curves. The user may now easily move the entire marker along the time-axis, or adjust the start or stop position.

For repeated insertion of the most commonly used markers, NorReview offers a list of previously used markers directly after selecting a new area with the cursor. The user may edit this list according to individual needs.

On demand, each marker may be treated as a Pause-marker. This means that the area covered by such a marker is not included in any further calculations. This Exclude from calculations feature may be turned on/off, even for pauses inserted during the actual measurement made in the instrument itself.

Event analysis

Option 1 also includes a post-processing feature to automatically search for events in a level vs. time measurement file. At each event, a new marker will automatically be inserted using a user-defined name. The user may specify the start and stop trigger conditions for the events defined by a level threshold, as an existing single marker, or as a combination.


Post-processed calculations based on the concatenation of the original measurement are easily performed with option 1 installed.This feature includes the possibility to perform overall calculations based on pre-selected measurement functions where selected markers are included and other markers excluded.

The calculations may additionally divide the overall measurement and calculation into pre-defined time periods such as every 15 minutes or every hour.

Option 2: Level vs. Frequency view

This add-in feature (option 2) enables the user to view both the measured level along the time-axis as well as the frequency spectrum of any position along the x-axis in the same split display. The requirement is, of course, that the frequency bands have been measured for the desired measurement function.

The displayed frequency spectrum (i.e. L(f) View) may be pre-weighted with any of the normal weighting networks (A-, B-, C– etc.), and to the right of the graph the user will find a tabular including the value at each frequency band. By selecting a part of the upper L(t) View with the cursor, the corresponding average spectrum is calculated using the Quick-Calc feature.

All these additional features are available with the NorReview package when the Level vs. Frequency option 2 is installed.

The split display showing a L(t) View (above) and a L(f) View (below) for evaluation of the frequency content at specific points or time-areas of interest.

Option 3: Multiple measurement files

It is often desirable to compare data from one instrument with that taken with another, or alternatively with that taken on another day.

This is possible with the NorReview software when the add-in “Multi file/project” (option 3) is installed. The user may then include level versus time measurement data from different measurements, or even from different instrument types, into the project tree as well as into the same L(t) View. Up to four different functions may be displayed simultaneously, and there is no limitation to the number of measurement files connected to the same project in the project tree.

The various measurements may be viewed starting with their individual start time along the x-axis (absolute time scale), or, starting at the same position at the x-axis (relative time scale). On demand, the operator may include a positive or negative date/time offset in order to adjust the starting position for any of the individual measurement files. There is also a feature for displaying multiple files after each other automatically.

All markers connected to any of the selected measurements are displayed along the upper x-axis. However, the markers for each measurement can be turned on/off on demand. New markers may be inserted, when this feature is combined with the edit marker feature in option 1.

Multiple projects

When a noise measurement project has been evaluated and saved, it may sometimes be of interest to compare this project with a similar one evaluated months or years ago.

The NorReview option 3 “Multi file/project” enables multiple projects into the same project tree. This feature then allows the user to select views from old measurements within the new project.

It is also possible to combine measurement data files from an old project with data from a new project. Hence, direct comparisons of measurements taken on the same sources are easily available.

All these features are available when the “Multi file/project” option 3 is installed.

Option 4: Audio replay

The Nor139Nor140 and Nor150 instruments are capable of storing audio recordings of the subject noise and it also stores voice comments made by the operator. These audio recordings are shown as markers along the upper part of the graph using the names “Record” and “Comment”.

In the basic version of the NorReview software, a double mouse click on any of these markers will initiate a replay of these audio files with the installed multi-media driver on the PC.

By adding this optional internal NorReview multimedia driver, the user may even watch the cursor moving along the L(t) View as the recorded file is replayed. A push on the Space key will pause and continue the player. Combined with the optional edit marker feature (option 1), simultaneously insertion of new markers is possible within the replayed section.

The inserted markers are available from a pre-defined list. A single push on any of the numerical keys inserts the marker. Each marker may be inserted as a spot marker (at one point only) or as a toggle marker (from/to). A delay may be specified for each marker in both directions.

Option 5: NorReport

Noise measurement projects may involve a lot of data files covering several months. Reporting of results may be required for example every single day or every week with each report layout and ensuring calculations being basically identical to the previous report. In these cases, where repeated use of the same format is demanded, producing all these identical reports from scratch is a waste of time. The NorReview option 5 handles this task more efficiently. Based on predefined Word templates, the user may quickly produce a complete report of any measurement file currently imported to the project tree. The templates may be adjusted to each users requirement by deleting or inserting those graphs and tables required. Company logos or other graphical objects may also be added; or templates may be stored for re-use in a later project.

Option 6: Calculation of the Lden value

This add-in tool opens a predefined calculation sheet where the actual day-periods are specified according to the Lden protocol. There are individual rows for day, evening and night, and several measurements may be included in each period.

The actual measurements are dragged from the project tree and into the desired rows of the calculation sheet. The operator may adjust the length of the measurement as well as the measured values before the final Lden value is calculated.

This option may also be used for the calculation of the Ldn value.

The EU directive allows member states to vary the time periods used in the calculation and hence the operator may specify local parameters such as time, duration and penality of the different periods in the Lden setup menu.

The Lden calculation sheet accepts measurement file entries from various parts of the 24 hour Lden-periods.

Option 7: German TA-Lärm Standard

This add-in tool opens a pre-defined calculation sheet, similar to the Lden calculation sheet, where the actual 24 hours periods are defined according to the TA-Lärm Standard. There are individual sheets for workdays, – nights and weekend calculations. The actual measurements are dragged from the project tree and into the desired field of the calculation sheet. All required data are then automatically placed in their individual columns. The operator may adjust the length of each measurement as well as the measured values before the rating value (“Beurteilungspegel”) is calculated. The entire sheet can be saved in the project tree for later evaluation, or printed out on a printer.

The TA-Lärm add-in module accepts measurement file entries to the various Day, Night and Weekend calculation sheets.

Option 8: Italian DM 16/03/98 Standard

The Italian Standard DM 16/03/98 has its own requirements. Hence, the NorReview package offers a special add-in calculation tool for this Standard as well. After choosing the desired measurement file in the project tree and clicking on the DM 16/03/98 (Italy) choice in the Calculation menu, a predefined report is generated on screen. This report may be printed out as a Word file, or saved in the project tree for later evaluation.

The ”DM 16/03/98” add-in module calculates and produces a final display report in accordance with the Italian Standard providing the measurement file includes all requested measurement values (i.e. noise profiles of all F, S and I time constants plus LFmin 1/3-octave frequency spectrum).

Option 9: Pure Tone

Tonality assessment module enabling calculations according to Annex C in the ISO 1996-2 (2007) and the German Standard DIN 45681 (2005).

Option 10: Impulsivity

Prominence of impulsive sounds in accordance with British Standard BS-4142 (2014) Annex E (similar to Nordtest Method NT ACOU 112).


  • Product data: Nor1026 NorReview