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New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
Distributed Mode Loudspeaker Arrays
The usefulness of Distributed Mode Loudspeakers (DMLs) in arrays has been investigated. The design goal is an array that evenly distributes energy over a hemi-disc. A model has been developed to predict trends of DML array radiation and compared with measurements. This model enables the performance of established array technologies to be tested. When several DML panels are positioned in an array, spatial aliasing results, as would be expected. Conventional array techniques, such as number theory modulation, can improve the radiation characteristics. Complete omni directionality is not achieved.
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