Multiple-Beam, Electronically Steered Line-Source Arrays for Sound-Reinforcement Applications

Meyer DG. Multiple-Beam, Electronically Steered Line-Source Arrays for Sound-Reinforcement Applications. J Audio Eng Soc. 1990;38(4):237-249. Available from: https://aes.org/publications/elibrary-page/?id=6038

@article{Meyer1990_6038,
  author = {Meyer, David G.},
  title = {{Multiple-Beam, Electronically Steered Line-Source Arrays for Sound-Reinforcement Applications}},
  journal = {Journal of the Audio Engineering Society},
  volume = {38},
  number = {4},
  pages = {237--249},
  year = {1990},
  month = apr,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6038}
}

TY  - JOUR
TI  - Multiple-Beam, Electronically Steered Line-Source Arrays for Sound-Reinforcement Applications
AU  - Meyer, David G.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 38
IS  - 4
SP  - 237
EP  - 249
PY  - 1990
DA  - 1990/04/06
UR  - https://aes.org/publications/elibrary-page/?id=6038
PB  - Audio Engineering Society
LA  - en
AB  - Long, narrow rooms with high ceilings are particularly difficult spaces for which to design sound-reinforcement systems. Rooms such as these typically require a combination of short-throw ( low Q ) loudspeaker components configured as a large, central cluster to provide uniform coverage over the seating space. Unfortunately many such rooms, in particular those of A-frame design, do not have adequate provisions for mounting a large cluster of loudspeaker components in an aesthetically pleasing fashion. A possible alternative for such a venue is described. In place of a central cluster with a large vertical dimension, we propose using an ensemble of horizontally mounted, electronically (phase-delay) steered line-source arrays. Each line source has a Q commensurate with the distance it must throw and the area it must cover. Shading is employed to minimize side-lobe energy as well as to help stabilize coverage patterns. Many desirable properties associated with a central cluster system, such as minimum energy directed toward the speaking position, stable coverage patterns, and preservation of locality of reference, apply to the proposed alternative described. Advances in signal-processing hardware technology help make a sound-reinforcement system design based on this approach both technically and economically feasible.
ER  -