Measurement - Simulation - Auralisation

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Measurement - Simulation - Auralisation
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Standards Supported
Methods
Sound Sources
 ISO 3382 series – Performance
places, ordinary rooms, open-plan
offices.
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 ISO 14257 – Workplaces.
 IEC 60268-16 – Speech
Transmission Index.
Open Room
ODEON makes use of hybrid algorithms,
highly optimized for maximum accuracy
at modest calculation time. Early
reflections are calculated using the
Image Source Method, while late
reflections are simulated by a technique
called Ray Radiosity, with secondary
sources placed at all reflection points.
Scattering/diffraction is handled properly
using the Reflection Based Scattering
method.
Point sources are described by a
directivity pattern, a power spectrum and
a delay, allowing the definition of natural
sound sources as well as loudspeaker
systems. Array sources can be imported
from an extensible XML-format or can
be created from point sources within the
ODEON array source editor.
Room geometries can be imported from0.00
most CAD systems in the .DXF or .3DS
format.
One and two point diffraction paths over
screens are automatically detected by
ODEON, allowing the sound attenuation
behind the screen to be calculated.
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Odeon©1985-2007
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A near field plot obtained by the ODEON
array source editor in a few seconds.
Odeon©1985-2007
ODEON takes care to simplify the room
for optimized acoustic simulations.
SketchUp Plug-in
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Line sources and surface sources are
useful for calculations in industrial
environments. The above example is a
turbine from a power station.
Download a free plug-in for importing
models directly from Trimble SketchUp
(www.sketchup.com) to ODEON.
Sound distribution in the shadow
zone of a screen.
Grid Maps
Materials
-30.00
Maps of calculated acoustic parameters
are shown for any number of selected
receiver surfaces.
The room surfaces are assigned
materials, with absorption coefficients
for the octave bands from 63 Hz to
8000 Hz, as well as scattering and
transmission properties.
C80 at 1000 Hz >
metres
(Down)
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Odeon©1985-2013 Licensed to: Odeon A/S
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Free Trial
P1
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Try ODEON without time limitations:
www.odeon.dk/free-demo-version.
User-friendly assignment of materials
from a long and extendable library.
www.odeon.dk
Distribution of clarity C80 at 1 kHz.
Odeon©1985-2003
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Job List
The Job list is where calculation of point responses and auralisation results
are organised and displayed. Point responses, multi-point responses, grid
maps and reflection paths can be calculated in the job list.
Reflectogram
Elevation
Arrival time: 89,77 ms (37,89 ms rel. direct or first reflection)
Level of: -10,43 dB (-5,35 dB rel. direct)
Azimuth angle: -29,21°, elevation angle: 2,18°
Reflection: 1. order, 10. reflection of 66, source:1
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Energy parameters
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Azimuth
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SPL (dB)
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T(30) (s)
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Odeon©1985-2007
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time (seconds rel. direct sound)
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Frequency (Hz)
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Reliable results
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Frequency (Hz)
Odeon©1985-2013 Licensed to: Odeon A/S
The frequency-dependent reflection based scattering method in
ODEON is one of the reasons for excellent agreement with
measurement results. In this example simulated and measured
clarity C80 at 500 Hz is shown for the Elmia concert hall.
C(80) at 500 Hz
Receiver: 5
8
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7
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Simulated
Measured
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1
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C(80) (dB)
C(80) (dB)
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Odeon©1985-2013 Licensed to: Odeon A/S
The Elmia concert hall (2 international Round
Robin on room acoustic prediction models).
Distance
8000
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R6 at 30.66 m
R5 at 20.50 m
R4 at 18.04 m
R3 at 12.50 m
R2 at 11.83 m
R1 at 5.34 m
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Frequency (Hertz)
Auralisation
Measuring system
Measuring and simulating room impulse responses can be done from within the
same software! ODEON version 12 is equipped with a powerful measuring system
that allows the user to measure impulse responses in a room, calculate the ISO
3382 room acoustic parameters and make comparisons with simulations.
C :\Odeon12C ombined\Measurements\IR_BasementC ropped.wav
Ray Impulse response at 2000Hz
Listen to the rooms and demonstrate
predicted acoustics to clients, as it
sounds in reality. Auralisation works
both for headphone and surround
system reproduction.
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Measured results are
displayed in the same
way as simulations.
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p x E1
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C :\Odeon12C ombined\Measurements\IR_BasementC ropped.wav
Decay curves at 2000Hz T(30) = 1.28 seconds
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Ordering Information
SPL(dB)
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Odeon©1985-2011 Licensed to: Odeon A/S
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time (seconds incl. filter delay)
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In ODEON you can measure, simulate
and compare the results side by side!
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Odeon©1985-2011 Licensed to: Odeon A/S
1.2
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time(seconds)
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0.65
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0.75
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0.85
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Elegant and user-friendly interface
Fast and reliable calculation
Astonishingly realistic auralisation
Odeon A/S
Scion-DTU, Diplomvej, Bldg 381
DK-2800 Kgs. Lyngby, Denmark
www.odeon.dk