Low Frequency Performance of Circular Loudspeaker Arrays

Fazi FM, Shin M, Olivieri F, Fontana S. Low Frequency Performance of Circular Loudspeaker Arrays. In: AES Convention 138. Audio Engineering Society; 2015. Paper 200. Available from: https://aes.org/publications/elibrary-page/?id=17635

@inproceedings{Fazi2015_17635,
  author = {Fazi, Filippo Maria and Shin, Mincheol and Olivieri, Ferdinando and Fontana, Simone},
  title = {{Low Frequency Performance of Circular Loudspeaker Arrays}},
  booktitle = {AES Convention 138},
  note = {Paper 200},
  year = {2015},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17635}
}

TY  - CPAPER
TI  - Low Frequency Performance of Circular Loudspeaker Arrays
AU  - Fazi, Filippo Maria
AU  - Shin, Mincheol
AU  - Olivieri, Ferdinando
AU  - Fontana, Simone
T2  - AES Convention 138
M1  - Paper 200
PY  - 2015
DA  - 2015/05/06
UR  - https://aes.org/publications/elibrary-page/?id=17635
PB  - Audio Engineering Society
LA  - en
AB  - Compact loudspeaker arrays are widely used for the localized delivery of audio messages and beamforming applications. The optimal directivity performance of these devices is limited to a given frequency limit, whose upper bound is defined by the occurrence of spatial aliasing. The lower bound of this frequency range is caused by the limited capability of the array to generate a directional sound beam when the wavelength of the sound to be reproduced is large in comparison to the size of the array. In this work a theoretical and experimental study is presented of the directivity limitations of circular loudspeaker arrays at low frequencies. The frequency at which the array directivity pattern starts to diverge from the desired one is calculated analytically and put into relation with the dynamic range of the transducers and with the regularization scheme used when designing the beamforming digital filters.
ER  -