An Array Filtering Implementation of a Constant Beamwidth Acoustic Source

Harrell JA, Hixson EL. An Array Filtering Implementation of a Constant Beamwidth Acoustic Source. In: AES Convention 87. Audio Engineering Society; 1989. Paper 2845. Available from: https://aes.org/publications/elibrary-page/?id=5849

@inproceedings{Harrell1989_5849,
  author = {Harrell, Jefferson A. and Hixson, Elmer L.},
  title = {{An Array Filtering Implementation of a Constant Beamwidth Acoustic Source}},
  booktitle = {AES Convention 87},
  note = {Paper 2845},
  year = {1989},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=5849}
}

TY  - CPAPER
TI  - An Array Filtering Implementation of a Constant Beamwidth Acoustic Source
AU  - Harrell, Jefferson A.
AU  - Hixson, Elmer L.
T2  - AES Convention 87
M1  - Paper 2845
PY  - 1989
DA  - 1989/10/06
UR  - https://aes.org/publications/elibrary-page/?id=5849
PB  - Audio Engineering Society
LA  - en
AB  - For acoustic arrays (microphones or loudspeakers), the main beam width of the radiation pattern is determined by the spacing between the elements in terms of lambda. Thus area coverage depends upon frequency. We have demonstrated that by controlling the spacing and frequency response of each element in an array, constant directivity of the main lobe over a wide frequency range can be achieved. Large powers can be achieved with relatively low energy densities at each element.
ER  -