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Dynamic Amplitude Shading of Electronically Steered Line Source Arrays

Long, narrow rooms with high ceilings typically require loudspeaker components configured as a large, central cluster. The aesthetically most pleasing configuration consists of horizontally mounted, electronically (phase delay) steered line source arrays. A difficult problem, however, is the need to dynamically shade the array such that the sidelobe energy is minimized and the directivity patterns remain stable for all frequencies. A family of optimum shading functions is derived and illustrated with a case study.

Authors: Schmidmaier, Richard; Meyer, David G.
Affiliation: School of Electrical Engineering, Purdue University, West Lafayette, IN
AES Convention:92 (March 1992) Paper Number:3272 Import into BibTeX
Subject:Sound Reinforcement

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