Home

• for more information on I-Simpa, visit the offical I-Simpa website.
• for building I-Simpa from the source code, follows the instructions
• for contacting the development team uses the email i-simpa@ifsttar.fr

Presentation

I-Simpa is a graphical user unterface (GUI) developed to host three-dimensional numerical codes for the modeling of sound propagation in complex geometrical domains. Although I-Simpa is well adapted for energetic models (ray-tracing, sound-particle tracing, theory of reverberation…), it can be extend to use ondulatory approaches.

I-Simpa alone is not a calculation software, but is equivalent to a pre and post-processor for acoustic codes. One or more numerical codes must be added in order to obtain a fully functional system. At the present time, I-Simpa is delivered with two codes: TCR (based on the Classical Theory of Reverberation) and SPPS a sound particle tracing code.

Classical applications are room and building acoustics, environmental noise and industrial noise, but it can be easily extend to other applications concerning the sound propagation in 3D environments (interior of vehicle, sound in cavities…).

The main concepts of I-Simpa are:

• a functional GUI: elements and components are organized in tree structures, to easily access to all information, parameters and properties. Many features are proposed for helping users…
• an ‘open’ system: all information and data are organized in spreadsheets that can be displayed, exported, copied…
• an ‘open’ software:each user can integrate its own numerical propagation code, develop its own functionalities within the interface for its own applications… All have been done in order you can extend I-Simpa easily.

I-Simpa has been initially developed as a research tool (i.e. for research laboratories), but can also be a very efficient tool for a professional or commercial use.

Interface description

• Basic description
• Menus
  • Menu 'File'
  • Menu 'Edition'
  • Menu 'Animation'
  • Menu 'Tools'
  • Menu 'View'
  • Menu 'Windows'
  • Menu 'Help'
• Tool bars
• 'Project' window
  • Principle, definitions and common functionalities
  • Tab 'Scene'
  • Tab 'Calculation'
  • Tab 'results'
• 'Properties' window
• 'Console' window

Thematics

• Scene configuration
• Calculation configuration
• Visualization of results

Tutorials

• Study of teaching room
• Study of a concert Hall
• Study of an industrial hall
• Scripting examples

Additional resources

Reference

• SPPS code
• TCR code

Extend I-Simpa

Personalize I-Simpa

• Change icons
• Add colormap
• Add/modify language files

I-Simpa format files

Create Toolboxes

Appendix

• Room acoustics parameters
• Warning and error messages
• ISO Standards