User:Carolgaudeoso/sandbox

ODEON is a software for room acoustics, which can be used for simulating and measuring the interior acoustics of buildings, such as concert and opera halls, theatres, worship spaces, sports stadiums, open-plan offices, Foyers, restaurants, music studios, underground and railway stations, airport terminals, industrial environments. With the appropriate treatment, outdoor situations can be studied as well. Given a 3D-model and materials (surface properties), the acoustics can be predicted, illustrated and listened to. Sound reinforcement is easily integrated into the acoustic predictions. ODEON uses the image-source method combined with a modified ray tracing algorithm.

History
The ODEON project was initiated as a cooperation between the Technical University of Denmark (Dpt. of Acoustic Technology) and a group of consulting companies in 1984 with the purpose of providing reliable prediction software for room acoustics. The company was then established in 1990. The first versions of ODEON were targeted at solving acoustic problems in concert and opera halls. The software was named after the ancient Greek Odeon, that is said originally to have been roofed.

Subscriptions
The Basics edition gives a collection of ODEON’s powerful tools at an affordable cost. ODEON basics comes with a measuring system and basic simulation tools. The computation engine and accuracy is exactly the same as in the other editions. The Industrial edition is for environmental acoustics where SPL, SPL(A), T30 and STI are the important results. It allows modelling of point, line and surface sources, with possibillity to model large and complex sound sources. The Auditorium edition is for a large set of room acoustical parameters based on the reverberation curve. It has a variety of graphical and auralization tools. The Combined edition includes all the features found in the Basics, Industrial and Auditorium editions.

License
A license for using the ODEON software is granted via a hardware key. The hardware key holds the license information and determines the version and edition of the ODEON software that can run when the hardware key is attached to the computer. The ODEON Combined Free trial version of ODEON has limited functionality and runs without a key.

Updates
2020: Release of version 16 with hedgehog graphs, support for ambisonic measurements, 3D matrix source-to-source calculations, and source macros. Additionally, improvements to reflectograms, 3D reflection paths, decay curves and sweep-measurement tool. 2018: Release of version 15, introducing 3DGrids with contours, interpolated maps, labelled scales, audio effects for auralisation signals, and multi source/signal auralisation expert. Also, dimension units (metres, feet, inches…) can be chosen by user, allowing positions/lengths to be entered (and being displayed) in the chosen units. 2016: Release of version 14, with improved calculation speed, extended capabilities in grids (vertical mappings, grouping of grids etc.), statistics in multi-point measurements, headphone frequency response compensation (inverse filtering) and much more. 2015: Release of version 13, with an improved user interface, a material optimization tool, enhancements in the measuring system and many more features. 2013: Release of version 12 with an impulse response measurement system integrated into the software. With this version, projects become more efficient than ever since measurements and simulations are compared side by side throughout the whole process. 2011: Release of version 11 with increased calculation speed and a new acoustic parameter list for selecting or creating the desired result-parameters. 2010: The SU2ODEON plugin for Google SketchUp was developed. 2009: Release of version 10, which includes support for array loudspeakers and beam steered arrays (Auditorium and Combined editions), and calculation of one and two point diffraction around objects according to A.D. Pierce. There are also improvements to the Extrusion modeller and the ODEON editor has been greatly enhanced. 2008: Odeon A/S moves to new premises at Scion DTU and starts selling the software directly with Brüel & Kjær as secondary sales channel. A new type of hardware lock is introduced for upgrades to version 9.1 and 9.2. 2007: Release of version 9, which includes transmission through walls and improved diffraction handling. Professional audio formats are supported and the quality of auralisation is improved. A new 3D Direct Sound display is particularly useful for the design of loudspeaker systems. 2005: Release of version 8, which includes new calculation principles, namely the Reflection Based Scattering method and Oblique Lambert for better handling of scattering. Support for the new open Common Loudspeaker Format (CLF). 2004: Release of version 7, including an initial version of the ODEON Extrusion modeller for graphical modelling of geometries, the ODEON GIF animation Workshop for editing of animations, Surround auralisation based on Ambisonics Techniques, multi surface source for improved modelling of industrial noise sources and a few improvements to the parametric modelling language. 2003: Release of version 6.5, including intensity decay curve for echo tracking, graph for comparison between measured and simulated parameters, improved modelling language for faster modelling, support for layers in the geometries when modelled in ODEON’s own format and when imported from a CAD drawing. 2002: Release of version 6, with improved geometry debugging, streaming convolution for nearly real-time auralisation, enhanced tools in Quick estimate, directivity plot editor. New utility for calculating delays and levels in a loudspeaker system according to the HAAS effect, etc. 2001: Release of version 5, with improved plotting, printer dialogs etc. Cooperation agreement with Brüel & Kjær about selling ODEON worldwide. 2000: Release of version 4.2 with improved calculation algorithms for early reflections. Angle dependent absorption and OpenGL displays for improved visualisation of the rooms. The concept of Acoustic Colours is introduced to visualise the acoustic properties of materials in a room model. A material editor is added to the material list. The modelling language is extended, and it is now possible to model shapes like Box, Cone, Cylinder, and Dome using a single line of code. Coordinate manipulation is extended in order to allow flexible use of these shapes and reuse of other geometries. 1999: Release of version 4 which includes desktop auralisation. 1998: Introduction of parametric modelling language and further development of version 3. 1997: Verification of version 3.0, conducted by ELSAM PROJECT DK. Release of ODEON 3.1 for Windows95/NT. 1996: Project with ELSAM PROJECT DK developing algorithms for modelling of large sound sources for use in industrial environments. 1995: Vector based scattering was implemented as a more efficient method in ray tracing. version 2.5 participated in the ‘International Round Robin on Room Acoustical Computer Simulations’, conducted by PTB in Germany (Results were presented at the ICA conference in Trondheim 1995). ODEON was one of three programs out of 16 to be judged ‘Unquestionably reliable in the prediction of room acoustical parameters’. 1994: Release of version 2.5, allowing multiple active sources. Release of ODEON-Sound software for auralisation using hardware from t. c. electronic (DK). 1992: Release of version 2, introducing the Secondary source method for late reflections. 1991: Release of version 1 and test with measured data (Royal Festival Hall, London). 1990: Use of ODEON in architectural competition for design of an opera house (Compton Verney, winning proposal by Danish architect Henning Larsen). 1989: Introducing hybrid models for more reliable results and faster calculation. Ray tracing was combined with image source methods, different for early and late reflections. The cuboid net method was introduced to accelerate the ray tracing process. 1984: Development of raytracing models.

SU2Odeon plugin for SketchUp
The plug-in SU2Odeon for SketchUp (SU) allows you to make direct use of SketchUp models in ODEON. SketchUp is a fun 3D modelling software, which is operated very intuitively. It allows you to create renderings of your rooms for impressive visualization. The newest plugin makes it possible to import ODEON 17 models (.par files) into SketchUp, even if a previous SketchUp model does not exist. The plugin can be installed on SketchUp 8 and SketchUp Make/Pro 2013 and later, though only the desktop apps – it cannot be installed on a SketchUp web app.

File formats (import and export)
If using models from AutoCAD it might be an advantage to use the .3ds file format for export from AutoCAD and Import into ODEON - rather than the .dxf format. This procedure will ensure that all relevant drawing data from the CAD drawing are exported in a way which can be used directly by ODEON. Generally, ODEON 16 supports not only .3ds and .dxf, but also stl, .obj .step (.stp), .iges (.igs) and .ply. When importing a geometry, ODEON creates a group of subsequent room files, calculation files and result files. These should normally not be accessed outside ODEON. All files share the same name - the name of the room - with a different extension added. Three main categories of files are used: • Room files, which contain data entered by the user. From these files both calculation and result files may be re-calculated. Some of the most important extensions are .par, which describes the whole geometry, .PcS that lists the sources, .PcR that lists the receivers and .Mat that includes the materials used in the model. • Calculation files, which hold data being re-used during calculations to speed up calculation (of point response calculations). These files can be erased once job calculations have been carried out, however if they are present, future calculations are sped up. • Result files, containing all results. For example, the extension .GNN refers to the grid response results in Job number NN. and .WAV refers to different impulse responses filters.