Optimal Exciter Array Placement for Flat-Panel Loudspeakers Based on a Single-Mode, Parallel-Drive Layout

Anderson D, Heilemann M, Bocko MF. Optimal Exciter Array Placement for Flat-Panel Loudspeakers Based on a Single-Mode, Parallel-Drive Layout. In: AES Convention 145. Audio Engineering Society; 2018. Paper 10084. Available from: https://aes.org/publications/elibrary-page/?id=19810

@inproceedings{Anderson2018_19810,
  author = {Anderson, David and Heilemann, Michael and Bocko, Mark F.},
  title = {{Optimal Exciter Array Placement for Flat-Panel Loudspeakers Based on a Single-Mode, Parallel-Drive Layout}},
  booktitle = {AES Convention 145},
  note = {Paper 10084},
  year = {2018},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19810}
}

TY  - CPAPER
TI  - Optimal Exciter Array Placement for Flat-Panel Loudspeakers Based on a Single-Mode, Parallel-Drive Layout
AU  - Anderson, David
AU  - Heilemann, Michael
AU  - Bocko, Mark F.
T2  - AES Convention 145
M1  - Paper 10084
PY  - 2018
DA  - 2018/10/06
UR  - https://aes.org/publications/elibrary-page/?id=19810
PB  - Audio Engineering Society
LA  - en
AB  - Flat-Panel Loudspeakers are most effective at reproducing audio non-directionally when operating at frequencies with many overlapping modes. Frequency regions with low modal overlap produce directional acoustic radiation, long decay times, as well as sharp peaks and notches in pressure. Exciter arrays re-enable use of these frequency regions by restricting structural excitation to a single mode until the frequency region of high modal overlap. An optimization method is described here for determining the placement of exciters such that they are all driven by a single amplifier yet only excite a single structural mode. Experimental results are reported for an acrylic panel with 4, 8, and 11 exciters that demonstrate successful operation of the exciter arrangements.
ER  -