Publications
EGO shape optimization of horn-loaded loudspeakers
Rick C. Morgans, Anthony C. Zander, Colin H. Hansen, David Murphy (2007)
Optimization and Engineering, 9 (4), p361-374Abstract:
horn-loaded loudspeakers increase the effciency and control the spatial distribution of sound radiated from the horn mouth. They are often used as components in cinema sound systems where it is desired that the sound be broadcast onto the audience uniformly at all frequencies, improving the listening experience. The sound distribution, or beamwidth, is related to the shape of the horn and can be predicted by numerical methods, such as the boundary-element or source superposition method, however the cost of evaluating the objective function is high. To overcome this a surrogate optimization method called Efficient Global Optimization (EGO) was used with a spline-based parameterization to and the shape of the horn that gives a frequency-independent beamwidth, thus giving a high quality listening experience. (Submitted for the SMSMEO-06 special issue).
This material is now only available to staff and students of the University of
Adelaide.
Should you wish to receive a copy, please contact the
AVC Group webmaster.
Note that if this article is under review, then it cannot be released and email requests will not be answered.
Manuscript - available for public access