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Convention Paper

Driver Directivity Control by Sound Redistribution

Authors: Pedersen, Jan Abildgaard; Munch, Gert

AES Convention 113 · Paper 5648 · October 2002

Abstract

The directivity of a single loudspeaker driver is controlled by adding an acoustic reflector* to an ordinary driver. The driver radiates upwards and the sound is redistributed by being reflected off the acoustic reflector. The shape of the acoustic reflector is non-trivial and yields an interesting and useful directivity both in the vertical and horizontal plane. 2D FEM simulations and 3D BEM simulations are compared to free field measurements performed on a loudspeaker using the acoustic reflector. The resulting directivity is related to results of previously reported psychoacoustic experiments.

Details

Published in
AES Convention 113
AES Convention
113
Paper number
5648
Publication date
October 6, 2002
Session subject
Transducers
Affiliation
Acoustics Research, Bang & Olufsen, Struer, Denmark (See document for exact affiliation information.)
Type
Convention Paper