Products ABEC - Lumped Element Part

The Lumped Element part allows for fully coupled driving of the acoustical Boundary Element part. For example, a diaphragm of a loudspeaker drives the acoustic field by means of its motion. However, this very motion depends also on the pressure of the acoustic field at the surface of the diaphragm. This is a typical example for coupling between the electro-mechanical and the acoustical domain.

The magic of the implementation of the coupling between the Boundary and Lumped Element part is that the latter is called and calculated only at observation stage and is not necessary at solving stage, which greatly reduces simulation time and gives flexibility. The trick is to calculate the radiation impedance functions of the coupling diaphragms at solving stage and to provide a late binding technique of driving values at observation stage.

The Lumped Element networks are specified with the help of scripts. The syntax and workings is taken from the legacy system Akabak.

The Lumped Element extension is powerful in simulating speaker cabinets, waveguides, but also can be useful in room acoustics in order to model simple acoustical elements such as bass-traps and so on.

The observation scripts allow for inspecting the network values of the Lumped Element networks. These spectra are rendered with the help of our graphic engine Vacs or VacsViewer. It is also possible to use only the Lumped Element part without an associated Boundary Element script.

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