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Demonstrator for Controllable Focused Sound Source Reproduction

ID 4942
Abstract The implementation of a prototype to establish a controllable sound field within a restricted area utilizing distributed loudspeakers is presented. Based on the near field beam-forming approach a demonstrator setup has been developed and implemented. The proposed solution should be a primary step towards providing a convincing alternative instead of wearing headphones which are inconvenient over long time periods for instance at a controller working position (CWP) in airport traffic control towers. Therefore this invention might improve the working process and therefore positively influence the safety conditions at all. The proposed setup consists of an off-the-shelf computer, a multi-channel audio converter, a flexible array of tiny loudspeakers and a tracking device. On the computer the sound field rendering process is realized with the programming language Pure Data (pd). Due to tracking data the sound field rendering process is able to trace the position of the listener in space and to calculate the required loudspeaker signals. Within this article the principle of function is briefly revisited and the required setup components as well as the implementation strategies are treaded.
Edition 7th Eurocontrol Innovative Research Workshop & Exhibition (Poster)
Monat 12
Name -
Ort Eurocontrol (Frankreich)
Anmerkung procedure: peer-reviewed
Status veröffentlicht
Art der Arbeit mixed form
Publikationsart Konferenzband-Beitrag
Jahr 2008
AutorInnen Sontacchi, A., Flock, M., Musil, T., Zotter, F.
EditorInnen Eurocontrol, E.
Keywords acoustic beam focusing, sound field, focus