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The setup includes an unregistered license for iNoise Free V2027 that is valid until 1-1-2028. All users with a registered iNoise Free license, or a purchased license which is not yet expired, can use their existing license files for V2027.

Changes in iNoise V2027 compared to V2026 rev. 1

New features

• OGC API Support
  Added support for importing data from OGC API services.
  Includes:
  • A new OGC API import option.
  • A user-definable catalogue for frequently used services.
  • An OGC API Explorer for examining available collections, layers and service capabilities.
• Improved results sidebar.
  Result visibility controls have been moved from the toolbar to a dedicated "Results" tab in the sidebar.
  All relevant result types can now be selected from one location.
• All results available after a single calculation.
  Contours
  The following contour types and labels can now be displayed:
  • LAeq for each period, per source category and collectively.
  • Lden per source category.
  • LAmax and Li for industrial noise (except Harmonoise).

  Table of results
  All contour result types are available, plus:

  • Octave-band results for stored source, group and total results.
  • LAmax results, even when source results have not been stored.
  • LAmax for industrial sources.
  • Li for industrial sources (except Harmonoise).
• Modifying coordinates of point items
  For point-based items, such as receivers, X and Y coordinates can now be modified in both the Item List and the sidebar.
• Search and Replace
  The Change Property Value function has been extended with a "Search and Replace" option.
  Features include:
  • Search for text within a field and replace it with new text or an empty value.
  • Keyboard shortcut: .
  • Overview of existing field values through the Current Values button.
    Note: Wildcards are not supported.
• Active period and group reductions
  The options for selecting the active period and group reductions have been moved from the toolbar to the Results sidebar.
  The active group selection on the toolbar is now only used for:
  • Selecting items.
  • Creating new items in the active group.
    The group used for displaying results is selected independently in the sidebar.
  • System information
    The Help | About dialog now includes a System Information button.
    This displays:
    • Information about the computer running iNoise.
    • Locations of configuration and project data.
      This information may be useful when reporting support issues.
  • Horizontal grid improvements
    When creating a horizontal grid, two grid types are now available:
    • Rectangular Grid
    • Equal spacing in X and Y directions.
      A single spacing value defines both directions.
    • Hexagonal Grid
      A staggered grid configuration.
      The Step Size defines the distance between neighbouring points in the X-direction. This distance is also equal to the distance to the six
      surrounding grid points, resulting in a more uniform point distribution than a rectangular grid.
      For existing projects with different X and Y spacing values, the X spacing will be used for both directions during update.
  • Export selected items
    A new Selection option has been added to the following item export dialogs:
    ESRI File Geodatabase, Geopackage, GML, JSON, Shape.
    The available export options are now:
    • Select All
    • Select None
    • Displayed Items
    • Entered Item Types
    • Selection
      When Selection is used, only the currently selected items are exported.
  • Industrial noise LAmax
    All industrial noise sources are now included in LAmax calculations.
    The Lmax Source option now only excludes sources from LAeq calculations.
  • CNOSSOS noise exposed area
    Noise exposed areas are now determined and reported separately for:
    • Industry
    • Road traffic
    • Railway traffic
    • All sources
  • Period definitions
    Because Lden and Day-Evening-Night indicators are now always available, defining Lden or Lday-evening-night periods manually is no longer required.
    Note: Day, evening and night period definitions are still used,
    particularly for Lden calculations.To avoid confusion with the predefined indicators:
    User-defined period name "Lden" is automatically renamed to "_Lden_".

Additional features

• Added bridge items for ISO 9613-2:2024 and CNOSSOS-EU calculations.
• Default façade reflection factor for ISO 9613-2:2024 changed to 0.9.
• KML export is now available in iNoise Free.
• Added support for iNoise Corporate licences.
• Added ground attenuation information to ISO test output.
• Implemented ISO 9613-2:2024/DAM 1:2026 (Draft Amendment 1) changes for barrier attenuation.
• Negative relative heights are now limited to zero during ground attenuation calculations to prevent unrealistic attenuation values.
• Added warning message when a requested WMS image exceeds supported dimensions.
• Added category grouping in the sidebar item tree, Item List and Group Manager, making items easier to locate.
• Added OGC API Explorer test functionality for downloading service metadata.
• Extended TatukGIS import functionality with OGC API support.
• Removed support for legacy MapInfo TAB files. Since MapInfo 15.2, MapInfo uses Unicode eTAB files. MIF/MID remains the recommended exchange format.
• To reduce complexity, the option to select number of receivers and number of groups/sources in the Table of Control has been removed.
• Help text updated based on user feedback, and reviews.

iNoise Free changes

The following features are not available in iNoise Free:

• Source Explorer
• SourceDB
• Wind Turbine Catalogue
• Search and Select
• Import using the OGC-API
• In addition is the maximum number of sources reduced from 20 to 10.
• KML Export is now available in iNoise Free.

Fixed issues

• ISO 9613-2:2024
• Added ground attenuation diagnostics to ISO test output.
• Prevented unrealistic ground attenuation values caused by negative relative
  source or receiver heights by limiting relative heights to zero during the
  ground attenuation calculation.
• ISO 9613-2: CONCAWE meteorological correction
  The implementation of the CONCAWE meteorological correction has been revised.
  Previous versions used the CONCAWE correction relative to neutral propagation
  conditions, whereas ISO 9613-2 assumes favourable propagation conditions as
  the reference situation. As a result, a meteorological correction of 0 dB
  represented different propagation conditions in the two methods.
  In iNoise 2027, the CONCAWE correction is adjusted so that favourable
  propagation conditions correspond to a correction of 0 dB, consistent with
  ISO 9613-2.
• CNOSSOS roundabout and crossing corrections
  Fixed an issue where roundabout and crossing corrections were not applied
  correctly in octave-band calculations.
• CNOSSOS vertical directivity of railways sources
  Fixed an issue in CNOSSOS/NL calculations where the vertical directivity
  correction for railway sources was not applied correctly in specific
  situations.
  This problem was introduced in iNoise 2024.2.
• CNOSSOS: empty impact-noise correction
  Fixed an issue where selecting "" for Impact noise resulted in Lr,IMPACT being set to 0 dB. This could cause an incorrect impact-noise contribution to be included in the railway rolling-noise emission calculation. In iNoise 2027, no impact-noise contribution is applied when "" is selected.
• Legend display
  Font and size overrides applied to model labels no longer affect the legend display.
• Table of results
  Source sound power levels and operating time corrections can again be edited directly from the results table.
  Calculations can be rerun directly from the table using the Calculate button.
• Licence validity
• Fixed an issue that prevented licences from being valid for longer than 18 months.
• Multi-year subscriptions are now fully supported.
• Import items
  Importing items now imports all supported item types by default.
• GeoPackage export
• Fixed export of the gpkg_geometry_columns table.
• The M-coordinate flag is now populated correctly.
• Sources without emission data
  Previously, sources without sufficient emission data were not processed by the calculation engine, causing results to be displayed as "not calculated" (<-->).
  These sources now correctly display a contribution of --, indicating that they contribute no noise emission.
• WMS background images
  Some WMS services limit the maximum image dimensions that can be requested.
  Although this limitation cannot always be avoided, iNoise now displays a warning message when such a request fails. Reducing the size of the iNoise window usually resolves the issue.
• M-coordinate handling
  • Export
    • Fixed an issue where M-values were always exported as zero.
    • M-values now correctly contain the terrain elevation associated with the item.
  • Import
    • Fixed an issue where M-values were not processed correctly during import.
    • When M-values are imported, the height definition is now automatically set to Own Value as required.

Minimum system requirements for using iNoise

• dual core processor, such as Intel Core i3, or AMD Phenom X2 (Intel Core i5 or faster recommended)
• 2 Gb RAM
• With a Pro, Company or Corporate license, a quad-core processor and more RAM memory are recommended
• Operating system: Microsoft Windows 11
• 500 Mb free disk space to install the software
• Additional 100 Mb free disk space for each iNoise project. Larger iNoise projects can take more than 1 Gb of disk space
• OpenGL support for 3D view
• Printer: MS Windows printer
• Internet access to download the software and to check for updates.