All lists and input fields have been freshened up in ODEON 13: Materials list, source-receiver list, job list etc. They all have been equipped with sorting functions, better display colours and easier editing properties, such as multi-delete, copy-paste etc.
Allows text to be entered and stored using any recognized character set (e.g. Chinese, Japanese, Korean) and without conflicting with the operation of Odeon.
In ODEON 13 it is possible to change source or receiver position directly on the 3D Edit Source display using CTRL+LMB. While you rotate the geometry a grid is adjusted to the visible plane to help anchoring the source on its nodes. In the next figure the grid is displayed for the XZ plane.
Making an array of sources of receivers is easier than ever! Now all members of the array are displayed in the 3D view in real time before changes are confirmed.
The Decay Roses (available in Auditorium and Combined editions of ODEON) display the energy arriving at different time intervals around a receiver. The tool helps inspecting the quality of reflections at various times.
The already known directivity polar plot editor in ODEON has now been re-build offering easier construction of directivity balloons.
Attractive visualization features have been added in the reflector coverage display. Rays from source/receiver to reflectors/audience can be displayed with varying density and colours according to layers.
Often acoustic refurbishment is needed in an existing room that suffers from bad acoustics. The room acoustician is asked to make a virtual model of the existing room. Materials are not perfectly known for all surfaces, so calibration or fine-tuning is needed in order to match simulations with measurements. ODEON 13 has been equipped with an optimization tool based on genetic algorithms. An initial estimate of materials is required. Then the algorithm searches for the best set of absorption coefficients, by a genetic evolution process, that makes simulations match with measurements.
A tool for investigating how the number of rays and the transition order affect the agreement between simulations and measurements. The tool calculates the average error in JND as a function of the number of rays. Different curves are displayed for different transmission orders, helping the user to determine the optimal number of rays and transmission order for the simulations.
This tool removes the requirement of fixed conditions in the measuring chain, which is common rule in ordinary calibration procedures,such as diffuse field calibration and free field calibration. The two-step sound source calibration adds a second step to the normal reverberation room or free field calibration methods, in order to allow compensation for any shift in the broadband gain, from the calibration to the field measurement conditions.
Enhancements to the algorithms for predictions and auralisation
Record an impulse response in an existing room. Go home and try how different signals would sound inside the room. Speech, music, noise, anything now can be convolved and auralised exactly as it is done so far in simulations.
A recorded impulse response can be further edited in the ODEON measuring system. An FFT frequency response is available now, as well as phase and cepstrum plots (spectrum of the frequency response).
Although ODEON offers superb automatic truncation of recorded impulse responses at the noise floor and the onset time, a group of manual operations are now possible for those who wish to have full control on the impulse response file. Together with the existing crop function, editing an impulse response file becomes an extremely time efficient task.
Very often a room model needs to have several openings in the geometry: open windows, open ceiling etc. Moreover there are projects that deal with pure outdoor sound propagation, such as an atrium courtyard, a street canyon etc. In all these cases a bounding box needs to be constructed by the user. Now an easy to use command has been added in the ODEON editor, which builds a bounding box to automatically include the whole geometry.