In this newsletter read about:
- BIM, IFC and SU2Odeon;
- Algorithm construction, Part 2;
- Reliability in results;
- Import from SONarchitect;
The latest Odeon related papers;
- Offer for loudspeaker manufacturers.

BIM, IFC and SU2Odeon
The trend in consulting and architecture is pointing towards managing all information within one 3D model. 
BIM, Building Information Modelling can handle information with the use of the IFC format.

Odeon has recently developed the SU2Odeon free plug-in for Google SketchUp which takes acoustic modelling one step on the way towards integration in BIM. See how in below video.

Video on how to handle IFC models with the new SU2Odeon plug-in. You may also watch the video on

A new service release of SU2Odeon is now available. SU2Odeon version 1.02 generates better feedback during export and works with the new SketchUp 8 release.

Loudspeaker manufacturers
We have just launched a free development package of Odeon as an offer for loudspeaker manufacturers and distributors. With the package we wish to make more loudspeaker data available for Odeon customers in the CLFformat. Traditional box loudspeakers as well as loudspeaker arrays and clusters can be handled in the Odeon software.

Manage Loudspeakers in Rooms with Odeon
Simulate room acoustics as well as electro acoustics in one model.

If you represent a loudspeaker manufacturer please contact us for more information about the free development package.

Import from SONarchitect
The company Sound of Numbers develops the software SONarchitect that manages building acoustic calculations and fulfillment of requirements in larger building projects. Now the building models from SONarchitects can be imported into Odeon for more detailed analyses of room acoustics, loudspeaker installations, auralisation etc.

SONarchitect export to Odeon
Building models can now be exported from SONarchitect to Odeon.

EuroRegio in Ljubljana
In September 2010 Dr. Rindel held a plenary lecture on the development of room acoustics at the 1st EAA EuroRegio in Slovenia. Get a copy of the presentation in pdf.
Algorithm - Construction
Part 2 in the series about Odeon´s software architecture deals with Ray tracing and closely related topics as highlighted with yellow in the Odeon house below. 

Algorithm Architecture
The architecture of Odeon is in constant development.

In the June 2010 newsletter the Reflection Based Scattering was described. This is shown in grey in the Odeon house above.  Read part 1 here.
Conferences in Australia
J H Rindel talks on ISRA
Dr. Rindel giving presentation on comparison of a scale model and computer model.

The ICA conference and the ISRA symposium were held in August 2010. Get papers in PDF on:

-Scale modelled result compared with Odeon models.

-Orchestra simulations with multi- channel anechoic recordings.

-Results from acoustic modelling in a master class at Level Acoustics earlier this year.

-Auralisation with virtual orchestra simulated and recorded with loudspeakers. 

Part 2: Ray tracing & hybrid methods
Already in 1984 the ray tracing algorithm was chosen as the basis for calculations because it proved both fast and accurate. Alternatives could have been image source method or cone tracing.

Hybrid methods were introduced in 1990 combining the image source method with ray tracing.
A significant improvement of algorithms for further calculation speed and accuracy was developed in 1992 with the secondary source method for late reflections. The secondary source method is particularly efficient for simulations in complicated room geometries like coupled volumes or rooms with rich details.

video on algorithms in Odeon
Video on the early algorithms from ray tracing and image source models to hybrid methods. You may also watch the video on

Meet us in 2010 and 2011
Meet Odeon here
Click here for more details on events.
Reliability of results
We have been asked from time to time for documentation about the reliability of Odeon and we have now created a
page on the subject.

simulated versus measured results Video on how you can test calculations in Odeon. You may also watch the video on
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October 2010