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Optimizing Placement and Equalization of Multiple Low Frequency Loudspeakers in Rooms

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Every room has strong influence on the low frequency performance of a loudspeaker. This is often problematic to control and to predict. The modal resonances modify the response of the loudspeaker depending on placement and listening position. In order to anticipate the behaviour of low frequency loudspeakers in rooms a simulation tool has been created based on finite-difference time-domain approximations (FDTD). Simulations have shown that by increasing the number of loudspeakers and modifying their placement a significant improvement is achieved. A more even sound pressure level distribution along a listening area is obtained. The placement of loudspeakers has been optimized. Furthermore an equalization strategy can be implemented for optimization purpose. This solution can be combined with multi channel sound systems.

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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=13307

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