Low Frequency Performance of Circular Loudspeaker Arrays
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FI. MA. Fazi, M. Shin, F. Olivieri, and S. Fontana, "Low Frequency Performance of Circular Loudspeaker Arrays," Engineering Brief 200, (2015 May.). doi:
FI. MA. Fazi, M. Shin, F. Olivieri, and S. Fontana, "Low Frequency Performance of Circular Loudspeaker Arrays," Engineering Brief 200, (2015 May.). doi:
Abstract: 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.
@article{fazi2015low,
author={fazi, filippo maria and shin, mincheol and olivieri, ferdinando and fontana, simone},
journal={journal of the audio engineering society},
title={low frequency performance of circular loudspeaker arrays},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},}
@article{fazi2015low,
author={fazi, filippo maria and shin, mincheol and olivieri, ferdinando and fontana, simone},
journal={journal of the audio engineering society},
title={low frequency performance of circular loudspeaker arrays},
year={2015},
volume={},
number={},
pages={},
doi={},
month={may},
abstract={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.},}
TY - paper
TI - Low Frequency Performance of Circular Loudspeaker Arrays
SP -
EP -
AU - Fazi, Filippo Maria
AU - Shin, Mincheol
AU - Olivieri, Ferdinando
AU - Fontana, Simone
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015
TY - paper
TI - Low Frequency Performance of Circular Loudspeaker Arrays
SP -
EP -
AU - Fazi, Filippo Maria
AU - Shin, Mincheol
AU - Olivieri, Ferdinando
AU - Fontana, Simone
PY - 2015
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2015
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.
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.
Authors:
Fazi, Filippo Maria; Shin, Mincheol; Olivieri, Ferdinando; Fontana, Simone
Affiliations:
University of Southampton, Southampton, Hampshire, UK; Huawei European Research Center, Munich, Germany(See document for exact affiliation information.)
AES Convention:
138 (May 2015)eBrief:200
Publication Date:
May 5, 2015Import into BibTeX
Permalink:
http://www.aes.org/e-lib/browse.cfm?elib=17635
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