Newsletter February 2011
Looking forward to Odeon version 11? Get a taster on comming new features. This newsletter is particularly aimed at design of loudspeaker systems in rooms.


Array loudspeakers in Odeon;
Public Address and Voice Alarm;
- Odeon Version 11 is on its way;
- Algorithm construction, Part 3;



Array loudspeakers in Odeon
Learn how to model array loudspeakers in Odeon. You can model arrays within the graphical user interface  as described in below video or by importing full array speakers and positions.

Array Source Editor
Video describing how to use the array source editor in Odeon. Also available on Youku.com

When an array is modelled there are different tools you can use to place and angle the array in the room. See how in below video

Place array loudspeaker in room
See how you can place the array in a room model. Video also available on Youku.com













NB! Next Odeon user course will be held 30-31 March at the Brüel & Kjær headquarters in Copenhagen, Denmark.

Join before 9 March.















Public Address and Voice Alarm
Odeon is used comprehensively for integrated design of room acoustics and loudspeaker systems. Read how ATKINS specialist acoustics division accomplished good design for PA/VA in Dubai Metro Station.

Dubai Metro PA/VA system
Dubai Metro Station in Odeon and in situ.

The Dubai case includes auralisation examples with and without acoustic treatment in the ceiling.
Automatic localization
Achieve better localization towards a speaking person and performer with the HAAS effect. Below video shows how the HAAS effect can be used for automatic calculation of gain and delay.

HAAS effect
Video on automatic HAAS function in Odeon for improved localization. Also available on Youku.com


Odeon Version 11 is on its way
Order Odeon today and version 11 is included in the first year of free support & maintenance at no extra cost. Please follow the ongoing presentations of new features on our social network pages.
Odeon users on facebook Odeon users on Linkedin OdeonDK on YouTube OdeonDK on Youku

Version 11 will be released in 2011 with many new features including:

Parallel processing
Up to 10 times faster calculations than version 10 on a computer with 4 cores. The more cores, the faster you get the results.

Acoustic parameter list
Customize results for current project and display only the relevant parameters in Single point response, Multipoint response and Grid response. Extract average values of parameters for selected octave bands.

User defined acoustic parameters
Create your own parameters from the impulse response e.g. T25 or C20
.

ISO 3382-2 compliance
More available parameters for analysing  quality of the decay and simulation. e.g. T20, C-Curvature and degree of non-linearity Xi (ψ) from ISO 3382-2.

Automatic grid scaling improved
The standard colours in grids will be scaled automatically based on statistics so that the grid curves will always use the full colour range for better visualization.

Echo detection
See in a point response if an echo is present with the
echo criteria according to Dietsch & Kraak. Ref

Echo detection, Dietsch & Kraak
  The elliptical room example is 40 m long and 20 m wide with a source placed in one focal point.

In a Grid response (example above) see which receivers are disturbed by echo; Echo(Dietsch)
1.

Dynamic diffusion curve
Analyse room diffusion with a new time dependent diffusion function. E.g. for reverberation chamber or concert hall design.
Coming Paper presentations
In May and June we will present two papers on new research & development:


Claus Lynge Christensen
In May at Auditorium Acoustics you can hear about the version 11 feature "Dynamic diffusion curve", when Claus Lynge Christensen  presents the paper:

"Diffusion in concert halls analysed as a function of time during the decay process."

Jens Holger Rindel
abstract in pdf
In June at Forum Acusticum  you can hear about a new model for sound reflection when Dr. Jens Holger Rindel presents the paper:

"An Impedance Model for Estimating the Complex Pressure Reflection Factor."












Recent journal papers
In January 2011 three interesting Odeon related papers have been published in Applied Acoustics. See publication list.

One paper from Dr. Monika Rychtaricova et al.: "Perceptual validation of virtual room acoustics: Sound localisation and speech understanding" concludes that:

"The analysis (evaluating on Odeon auralisation of front to back sound localisation and speech comparison, red.) has shown a strong correlation between the measured and simulated result in both cases. Good overall agreement between the simulated and measured data was found."

Algorithm - Construction, Part 3
Part 3 in the series about Odeon´s software architecture deals with angle dependent absorption (highlighted in yellow below). 

Algorithm Architecture
The architecture of Odeon is in constant development.

Read already described development (in grey) see previous newsletters:

Part 1 Reflection Based Scattering.
Part 2 Ray tracing, vector based scattering and secondary Source method.

Meet us in 2011
Meet Odeon here
Click here for more details on events.





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February 2011
Odeon.dk