AKABAK has on board a Boundary Element and a Lumped Element solver which fully couple. Further, the Direct Sound mode is available.
The Boundary Element Method is for acoustics only, typically for the more complicated parts of a loudspeaker such as vented enclosures, multiple drivers, waveguides and radiation. The Boundary Element part of AKABAK can also be used to investigate the response of small rooms and all kinds of other acoustic problems.
The Lumped Element Method typically is used to model electro-acoustic structures. The LE-part is very similar to the legacy Akabak, allowing to simulate various responses including filters, electronics, mechanics and acoustics.
The Direct Sound Mode calculates an acoustic field without diffraction and reflections. This approximate approach does not need a solving stage. It proves practical practical in estimating the sound pressure distribution of a large scale audience. It also can be used to design cross-over filters for loudspeakers.
The Boundary Element and the Lumped Element parts can be fully coupled, see AES Paper. The coupling allows to attach complicated acoustic structures to an electro-acoustic network. Further, the coupling is established at the observation stage with the advantage that changing lumped elements does not make necessary a re-solving.
AKABAK supports sub-domain modeling. Sub-domain modeling is powerful for larger acoustic systems, such as vented loudspeaker enclosures or horns. In BEM it is the only way to deal with a certain case of radiation from an Infinite Baffle.
AKABAK recognizes multiple domains automatically, in cases where volumes are decoupled. An example is the modeling of a sealed loudspeaker enclosure.
AKABAK standard mode is 3D, but the application also supports the axis-symmetric and the 2D mode.
AKABAK is easy to use. For input of geometry there is a simple internal CAD-tool available with specific support for electro-acoustic devices. It is possible to import mesh-files, which facilitates the input of exterior CAD-files. Also supported are vibrational data-files, see www.Klippel.de. All input can be parameterized with the help of formula systems. AKABAK will auto-mesh the structure in preparation for the boundary element analysis.
AKABAK is a desktop application with guided forms, organization of data-files, rendering of the boundaries and resulting fields as a 3D-picture and managing of observations such as fields and spectra. After the solving stage, the response can be observed immediately. Sound pressure fields can be displayed as contours inside AKABAKs 3D-viewer. Spectral response curves at any point in space can be calculated and rendered with the help of our graphic engine VACS. The coupling between AKABAK and VACS is seamless and fully automatic.
AKABAK supports parallel processing and 32 and 64 bit architectures.
The professional version stores and retrieves result-files of the solver automatically.
A range of examples is copied to your computer during installation.
The user-manual comes in form of a help-system, where each item and all parameters are well explained. With the installation a rich set of examples is copied to your computer. If you want to have a look before installation, here you can download the help-file.