ODEON Room Acoustics Program

176 Pages·2014·6.92 MB·English

by  Claus Lynge Christensen

ODEON ROOM ACOUSTICS SOFTWARE

Version 12

User manual

Basics, Industrial, Auditorium and Combined Editions

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Auditorium Acoustics · Sound reinforcement · Noise Control
Front Figure: Front picture from room model of theatre. Acoustic consultant: COWI A/S.
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ODEON Room Acoustics Software
Version 12
2nd Edition
Basics, Industrial, Auditorium and Combined Editions
by
Claus Lynge Christensen & Georgios Koutsouris
Odeon A/S
Scion DTU
Diplomvej, building 381
DK-2800 Kgs. Lyngby
Denmark

www.odeon.dk
2013
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Introduction

This manual is intended to serve as an introduction on modelling room geometries in ODEON
software, on the facilities for measurement and simulations and the applied calculation
principles behind. It will not cover in depth all facilities included in the ODEON software;
explanations of displays, calculation parameters, results, etc. are available as context sensitive
help from within the ODEON applications (shortcut F1). It is recommended to use the online
help to learn about the specific features available from the different displays, the
interpretation of results, calculation parameters, etc.
The contents of this manual are as follows:
Chapter 1 covers installation of the program, changes from previous versions etc.
Chapter 2 is a short guided tour, introducing the ODEON program and its facilities, including
specification of calculation parameters, definition of receivers, receiver grids, different kind of
sources and the presentation of results. Section 2.1 is intended for the Auditorium and Combined
editions. Section 2.2 is intended for the Industrial edition, while section 2.3 givesan overview of
the Basics edition. If you are new to ODEON, chapter 2 is a must.
Chapter 3 covers geometry modelling. New releases of ODEON often include new facilities
which can speed up the modelling process as well as tools for verification of geometries. Some
of the facilities are; a plug-in for Google Sketchup, extensive support for import of CAD
models in the .dxf as well as the .3ds (3D Studio) format and a stand-alone drawing program for
modelling of so called extrusion models. Tools for verification of room models are also covered
in this chapter. With improved support for 3rd party tools for geometry modelling, knowledge
about ODEON parametric modelling language is becoming of less importance. The advanced
user will find that the description of the .par format has been moved to appendix E. The format
features support for symmetric and semi-symmetric rooms, use of constants, variables,
counters, loops etc. and can be useful when studying geometrical parameters such as angle of
reflectors etc. As all geometry, also imported ones, are stored in the .par format, it is possible
to add features described in terms of parameters to an imported geometry if familiar with this
format.
Chapter 4 deals with the materials to assign to the surfaces of the rooms; absorption,
scattering and transparency coefficients as well as transmission data. Special materials that
may speed up the modelling process and how to manage the material library are also covered
in this chapter.
Chapter 5 deals with the auralisation options in ODEON Auditorium and Combined; the hardware
requirements, how to publish calculated sound examples on the Internet or on audio CD's etc.
Chapter 6 introduces the calculation principles used in ODEON, giving an idea on the
capabilities and limitations the simulation part of the program.
Chapter 7 describes important calculated room acoustic parameters available in ODEON, how
they are calculated and how to interpret the results.
Chapter 8 describes the various calculation parameters available in the program. Most of the
parameters are automatically set to reasonable values by ODEON; however for special cases
you may need to adjust some of the calculation parameters.
Chapter 9 is the discussion on quality of results and how to achieve good results. This chapter
may be relevant once familiar with the program.

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Chapter 10 describes how to extend the library of directivity patterns available for point
sources and the use of directivity patterns in the Common Loudspeaker Format, CLF.
Chapter 11 introduces the line array sources discussing some basic principles behind array
source design.
Chapter 12 presents the integrated impulse response measuring system in ODEON. The
chapter explains which measuring methods are used, how to obtain a healthy impulse
response and how to obtain room acoustic parameters as the results. The chapter ends with
an annex giving examples of good and bad impulse responses.

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END USER LICENSE AGREEMENT

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registered in different countries). The license may only be transferred to anyone with the prior
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USE OF ANECHOIC ORCHESTRA RECORDINGS DELIVERED WITH THE SOFTWARE

The Odeon Auditorium and Combined (excluding the demo version) installs with a number of
anechoic recordings that may be used with the Odeon software without restrictions, except for
the orchestra recordings.
For the orchestra recordings in the WaveSignals\Orchestra folder special restrictions apply:
Customer acknowledges that the anechoic recordings are the sole property of TKK, Helsinki
University of Technology.
Customer acknowledges the right to use the recordings for internal use only and the right to
make one copy for archival and backup purposes.
Customer agrees not to modify or remove, and not to tamper with or disable any automated
display, performance, or execution of, any credits, references or notices, without the prior
written consent of TKK, Helsinki University of Technology.
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recordings or sublicense or otherwise transfer the sublicense.
If the anechoic recordings are used in the Customer's work in such a way that an ordinary,
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licensed from Odeon A/S".

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GENERAL

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ODEON product. If any provision of this Agreement shall be declared void or unenforceable,
the validity of this Agreement and all other provision shall not be affected. ODEON product
support and service is only provided to registered ODEON users with a valid support
agreement.
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