Directional loudspeaker arrays for acoustic warning systems with minimised noise pollution

R. van der Rots, Arthur P. Berkhoff

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
1 Downloads (Pure)

Abstract

This paper describes numerical and experimental results of beamforming algorithms for generation of directional sound. The intended application is a sound source for cars with the objective to warn vulnerable road users while minimising noise pollution. Nowadays, sensors exist which are able to reveal the position of the vulnerable road users, which information can be used by the warning signal generator. Based on this information, the signal generator is designed to generate the specified warning signal at the location of the vulnerable road user while the acoustic response at other locations is minimised. The directional sound beam was realised with an array of controlled acoustic moving coil sources. The paper compares different methods to generate the sound beam and investigates their effectiveness for this application by simulation and experimental results. The robustness under realistic conditions in simulations and in initial real-time experiments on a car are discussed.
Original languageEnglish
Pages (from-to)345-354
JournalApplied acoustics
Volume89
DOIs
Publication statusPublished - 2015

Fingerprint

noise pollution
warning systems
loudspeakers
acoustics
roads
signal generators
beamforming
coils
simulation
sensors

Keywords

  • METIS-308925
  • IR-94024

Cite this

@article{8f28696bd27b4783a9a73a9b9fcaed9c,
title = "Directional loudspeaker arrays for acoustic warning systems with minimised noise pollution",
abstract = "This paper describes numerical and experimental results of beamforming algorithms for generation of directional sound. The intended application is a sound source for cars with the objective to warn vulnerable road users while minimising noise pollution. Nowadays, sensors exist which are able to reveal the position of the vulnerable road users, which information can be used by the warning signal generator. Based on this information, the signal generator is designed to generate the specified warning signal at the location of the vulnerable road user while the acoustic response at other locations is minimised. The directional sound beam was realised with an array of controlled acoustic moving coil sources. The paper compares different methods to generate the sound beam and investigates their effectiveness for this application by simulation and experimental results. The robustness under realistic conditions in simulations and in initial real-time experiments on a car are discussed.",
keywords = "METIS-308925, IR-94024",
author = "{van der Rots}, R. and Berkhoff, {Arthur P.}",
year = "2015",
doi = "10.1016/j.apacoust.2014.09.024",
language = "English",
volume = "89",
pages = "345--354",
journal = "Applied acoustics",
issn = "0003-682X",
publisher = "Elsevier",

}

Directional loudspeaker arrays for acoustic warning systems with minimised noise pollution. / van der Rots, R.; Berkhoff, Arthur P.

In: Applied acoustics, Vol. 89, 2015, p. 345-354.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Directional loudspeaker arrays for acoustic warning systems with minimised noise pollution

AU - van der Rots, R.

AU - Berkhoff, Arthur P.

PY - 2015

Y1 - 2015

N2 - This paper describes numerical and experimental results of beamforming algorithms for generation of directional sound. The intended application is a sound source for cars with the objective to warn vulnerable road users while minimising noise pollution. Nowadays, sensors exist which are able to reveal the position of the vulnerable road users, which information can be used by the warning signal generator. Based on this information, the signal generator is designed to generate the specified warning signal at the location of the vulnerable road user while the acoustic response at other locations is minimised. The directional sound beam was realised with an array of controlled acoustic moving coil sources. The paper compares different methods to generate the sound beam and investigates their effectiveness for this application by simulation and experimental results. The robustness under realistic conditions in simulations and in initial real-time experiments on a car are discussed.

AB - This paper describes numerical and experimental results of beamforming algorithms for generation of directional sound. The intended application is a sound source for cars with the objective to warn vulnerable road users while minimising noise pollution. Nowadays, sensors exist which are able to reveal the position of the vulnerable road users, which information can be used by the warning signal generator. Based on this information, the signal generator is designed to generate the specified warning signal at the location of the vulnerable road user while the acoustic response at other locations is minimised. The directional sound beam was realised with an array of controlled acoustic moving coil sources. The paper compares different methods to generate the sound beam and investigates their effectiveness for this application by simulation and experimental results. The robustness under realistic conditions in simulations and in initial real-time experiments on a car are discussed.

KW - METIS-308925

KW - IR-94024

U2 - 10.1016/j.apacoust.2014.09.024

DO - 10.1016/j.apacoust.2014.09.024

M3 - Article

VL - 89

SP - 345

EP - 354

JO - Applied acoustics

JF - Applied acoustics

SN - 0003-682X

ER -