Technical / Specifications

Technical specifications for dhwaniPRO.

Review the documented software requirements, acoustic calculation parameters, geospatial data formats and output capabilities of dhwaniPRO 11.0.0.1.

These specifications apply to the outdoor sound propagation software suite. Functions restricted to Vector or Delta are identified separately.

System Requirements File Formats

Calculation Methods

ISO 9613-2:2024 across all editions. CNOSSOS-EU in Vector and Delta.

Method details →

Acoustic Processing

Eight octave bands with logarithmic broadband energy summation and supported propagation attenuation.

Spatial Data

UTM coordinates, georeferenced images and edition-specific GIS and terrain imports.

Technical Outputs

Noise contours, receptor matrices, report figures and supported spatial exports.

Runtime Environment

Application and system requirements.

dhwaniPRO is a 64-bit Windows desktop application using .NET 10. Projects are stored in a structured archive containing model and calculation data.

dhwaniPRO application specifications
Product	11.0.0.1
Developer	Envitrans Private Limited
Operating System	Microsoft Windows 10 or 11, 64-bit
Runtime Framework	.NET 10, 64-bit application environment
Project Package	.dhnx structured project archive
Project Contents	Geometry, source definitions, spectrum data and calculation parameters
Activation	Hardware activation required

Deployment Notes

Desktop Application

dhwaniPRO is installed and operated on supported Windows computers.

Project Archive

Model definitions and calculation parameters are maintained within the .dhnx project package.

Licence Activation

Activation requirements and commercial licensing conditions should be reviewed before purchase.

Review licensing conditions →

Calculation Engine

Acoustic processing parameters.

The calculation engine processes sound propagation across eight octave bands and evaluates the applicable propagation effects for the selected method.

dhwaniPRO acoustic calculation parameters
Calculation Standards	ISO 9613-2:2024 in all editions; CNOSSOS-EU in Vector and Delta
Octave Bands	63, 125, 250, 500 Hz, 1, 2, 4 and 8 kHz
Broadband Evaluation	Logarithmic energy summation of calculated octave-band levels
Core Attenuations	Geometrical divergence, atmospheric absorption, ground effect and screening diffraction
Basic Pathfinding	Line-of-sight paths, single-barrier screening and inline series obstacles
Advanced Pathfinding Vector / Delta	3D rubber-band path search, building perimeter wrapping and multi-edge diffraction chains
Parallel Processing Vector / Delta	Multi-threaded CPU processing

Geospatial Processing

Spatial reference and supported inputs.

dhwaniPRO uses a UTM projection grid for project geometry. Supported map imagery, GIS vectors and terrain data are integrated according to edition availability.

Geospatial formats and coordinate support
Project Coordinates	Locked UTM projection grid established from the project origin latitude and longitude
GIS Vector Import Vector / Delta	GeoJSON and ESRI Shapefile
Raster Image Overlays	PNG, JPEG, TIFF and BMP
Image Georeferencing	Standard World File geocalibration parameters
Terrain Import Vector / Delta	ESRI ASCII Grid elevation data
Basemap Providers	OpenStreetMap and Esri imagery. Google Maps satellite service in Vector
Feature Heights	Metres above ground level, referenced to underlying terrain where applicable

Spatial Data Considerations

Coordinate Consistency

Imported data should be checked against the project coordinate system.

Terrain Availability

Elevation import and terrain-aware modelling require Vector or Delta.

Local Data

Supported locally supplied map and terrain data can be used without relying on automated data services.

Explore GIS & terrain workflows →

Output Specifications

Calculated results and export formats.

dhwaniPRO provides receptor results, sound-level contours and technical graphics. Extended analysis views and certain exports depend on the selected edition.

dhwaniPRO output and export specifications
Contour Maps	Filled sound-level isobands and isolines
Receptor Results	Detailed receptor matrices in all editions
Extended Tables Vector / Delta	Additional threshold, source-contribution and related assessment tables
Vertical Profiles Vector / Delta	Terrain and propagation ray-path cross-sections
3D Geometry View Vector / Delta	Interactive review of buildings, barriers and terrain
Raster Figures	300 DPI PNG and JPEG map plates with UTM coordinate margins and legends
Vector Graphics	Enhanced Metafile (EMF)
KMZ Export	Google Earth KMZ in dhwaniPRO and Vector only

Delta exported report graphics carry academic-use markings. KMZ export is not available in Delta.

Reporting Considerations

Technical Figures

Raster and vector graphics are available for compatible reporting workflows.

Academic Restrictions

Delta figures are watermarked, and commercial consultancy use is not permitted.

Edition Availability

Extended tables, profiles and interactive 3D review are available in Vector and Delta.

Compare output capabilities →

Technical Scope

Intended application and limitations.

The specifications describe the documented software capabilities. Appropriate results depend on the modelling inputs, selected method and project assumptions.

Outdoor Propagation

dhwaniPRO is designed for outdoor noise propagation, not indoor room acoustics or architectural reverberation.

Regulatory Criteria

Project assessment thresholds are user-defined. Software values should not be treated as universal statutory limits.

Data Dependence

Spatial geometry, acoustic source inputs and terrain quality influence the represented model.

Verification Boundaries

Numerical agreement with reference cases does not guarantee field prediction accuracy.

Calculation Methods → Verification & Disclosures →