Directional Loudspeakers Using Sound Beams

Havelock DI, Brammer AJ. Directional Loudspeakers Using Sound Beams. J Audio Eng Soc. 2000;48(10):908-916. Available from: https://aes.org/publications/elibrary-page/?id=12046

@article{Havelock2000_12046,
  author = {Havelock, David I. and Brammer, Anthony J.},
  title = {{Directional Loudspeakers Using Sound Beams}},
  journal = {Journal of the Audio Engineering Society},
  volume = {48},
  number = {10},
  pages = {908--916},
  year = {2000},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12046}
}

TY  - JOUR
TI  - Directional Loudspeakers Using Sound Beams
AU  - Havelock, David I.
AU  - Brammer, Anthony J.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 48
IS  - 10
SP  - 908
EP  - 916
PY  - 2000
DA  - 2000/10/06
UR  - https://aes.org/publications/elibrary-page/?id=12046
PB  - Audio Engineering Society
LA  - en
AB  - The relative merits of two directional loudspeakers intended for localized sound-field production, each driven by a single, compact transducer, are considered. They are intended for applications in which audio is required by listeners congregated in a small region of an otherwise reverbverant or noisy environment, such as multimedia venues involving kiosks, museum displays, theme parks, and game centers. The loudspeakers are end-fire line arrays consisting of 1) a ducted point source employing a single compression driver, in which the point sources are at the open ends of tubes of unequal length connected to a common manifold and 2) a parametric acoustic source produced by an intense beam of ultrasound. The directionality, frequency response, and audio output of the arrays are compared by measurement and simulation.
ER  -