This list of videos goes through all the steps required to get acoustical results from scratch, following the appropriate setup order. Then, you can watch our other video tutorials for alternative ways to make calculations and other more specialised functions. For example, you might be interested in repeating the steps in the videos below on your own imported geometries.
For a more simplified written guide to producing results from scratch, you can refer to our Quick Start Guides.
Rooms to Start Working with ODEON
To start using ODEON, you don’t have to spend time importing a new model. ODEON comes with a variety of pre-installed rooms (auditoriums, studios, noisy factories and stations, concert halls…), so you can quickly start to get familiar with how an acoustic model should look like.
The 3DView is the go-to window for examining the geometry in ODEON. But it contains more than the obvious options, as is shown in this video.
0:48 Viewing and changing the preview
1:31 Rotating, moving, zooming
2:37 Using and adding default views
3:36 Projection, rulers, dimension units
4:19 Highlighting surfaces
4:45 Copying graphics from the 3D View
Point, line, & multi-surface sources
Just like a real measurement, to simulate an impulse response it is necessary to have at least 1 source and 1 receiver at specific positions.
Point sources can be assigned a directivity balloon and sound power by octave bands. Sources and receivers can be tabulated into an array.
Line sources and multi-surface sources are available in editions Industrial and Combined. Line sources are useful to model long sources like pipes with running water and conveyor belts, while multi-surfaces are useful to model large industrial machinery.
0:25 Source-receiver list
1:30 Creating a point source
1:43 Defining source position
4:17 Defining source orientation
5:43 Assigning directivity patterns
7:39 Directivity editor
11:08 Adding power gain
11:58 Creating a receiver point
12:38 Tabulation tool
15:05 Edit, delete, and copy sources
16:19 Source macro
18:26 Line sources
19:39 Multi-surface sources
Acoustic surface properties
In order to calculate reflections, acoustic properties such as absorption and scattering must have been assigned to surfaces.
Absorption coefficients, or “materials”, can be easily assigned to groups of surfaces, making the process easy even for complicated models. ODEON comes with a library of materials ready for use, which can also be customized. The video also shows how to use scattering and transparency coefficients.
0:24 Surface list and layers
1:41 Material library
3:39 Assigning absorption coefficients
5:35 Adding new materials
7:36 Global and local room libraries
8:31 Quick estimate of reverberation
9:42 Material archive
10:22 Scattering coefficient
13:06 Transparency coefficient
14:17 Bounding box for outdoor acoustics
This video covers the impulse response length and number of late rays. These are the most important calculation parameters, which should always be manually defined for every room model. Other miscellaneous parameters are also described, such as background noise for STI and air conditions for air absorption.
0:38 Impulse response length
1:35 Quick Estimate
2:48 ODEON’s calculation methods
3:36 Number of late rays
5:44 Global Estimate
6:29 Ray loss
7:10 Outdoor simulations
8:11 Background nois
Multi & Single point responses
Finally, time to run a simulation and calculate some results!
The multi-point response is the impulse response calculation from your active sources to all your receivers. You’ll get all the numerical values you need to comply for ISO 3382-3, as well as bar graphs and statistics. You can even overlay measured and simulated data for comparison.
The single-point response is available in editions Auditorium and Combined, and focuses on a single receiver to obtain more detailed data, such as the decay curve, reflectogram, and binaural impulse response.
1:10 Setting up Multi point responses
3:42 Active receivers and receiver groups
5:00 Acoustic parameter values
8:10 Parameter bars
9:13 Tab availability conditions
9:49 Statistics, spatial decay, STI
10:59 Noise control
11:27 Measured vs simulated
13:40 Setting up Single point response
15:08 Decay curves and intensity hedgehog
16:49 Decay roses, Reflection density
18:22 Binaural room impulse response
18:53 Dynamic diffusivity, Dietsch echo
19:11 Frequency response curve