Design and Measurement of First-Order, Horizontally Beam-Controlling Loudspeaker Cubes

Meyer-Kahlen N, Zotter F, Pollack K. Design and Measurement of First-Order, Horizontally Beam-Controlling Loudspeaker Cubes. In: AES Convention 144. Audio Engineering Society; 2018. Paper 447. Available from: https://aes.org/publications/elibrary-page/?id=19559

@inproceedings{MeyerKahlen2018_19559,
  author = {Meyer-Kahlen, Nils and Zotter, Franz and Pollack, Katharina},
  title = {{Design and Measurement of First-Order, Horizontally Beam-Controlling Loudspeaker Cubes}},
  booktitle = {AES Convention 144},
  note = {Paper 447},
  year = {2018},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19559}
}

TY  - CPAPER
TI  - Design and Measurement of First-Order, Horizontally Beam-Controlling Loudspeaker Cubes
AU  - Meyer-Kahlen, Nils
AU  - Zotter, Franz
AU  - Pollack, Katharina
T2  - AES Convention 144
M1  - Paper 447
PY  - 2018
DA  - 2018/05/06
UR  - https://aes.org/publications/elibrary-page/?id=19559
PB  - Audio Engineering Society
LA  - en
AB  - This paper describes a loudspeaker cube with four transducers on its horizontal facets, designed to enable sound radiation with adjustable first-order beam control. Design and equipping of the cubical loudspeaker is presented along with two open data sets containing multiple-input-multiple-output impulse responses (MIMO-IRs) of our measurements. The first one contains 648x 4 MIMO-IRs from input voltages to a grid of microphones at a fixed distance. The second set contains 4x 4 MIMO-IRs from input voltages to loudspeaker cone velocities, and it characterizes the active and passive transducer coupling through the enclosure that we aim to equalize/decouple. Based on these measurements we present a simple FIR filter design required for beam control of which we discuss operation range and limitations.
ER  -