Real-time steerable directional sound sources

Arthur P. Berkhoff, R. van der Rots

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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Abstract

Warning signal generators in cars are being developed that have the objective to warn vulnerable road users. Several sensor systems 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 can be designed to generate the specifed warning signal at the location of the vulnerable road user while the acoustic response at other locations is minimized in order to reduce noise pollution. The directional sound beam was realized with an array of controlled acoustic sources. Changes of the relative positions of the vehicle and the vulnerable road user require continuous adjustments of the sound beam. Different methods to generate the sound beam are described and experimental results are shown. Rapid realtime adjustment of the beaming direction is possible even if the beamformer is recomputed everytime a new steering direction is required.
Original languageEnglish
Title of host publicationProceedings AIA/DAGA 2013
Place of PublicationBerlin
PublisherGerman Acoustical Society (DEGA)
Pages2144-2147
Publication statusPublished - 18 Mar 2013
Event39. Jahrestagung für Akustik, AIA-DAGA 2013: gemeinsam mit der Associazione Italiana di Acustica (AIA) - Merano, Italy
Duration: 18 Mar 201321 Mar 2013
Conference number: 39

Publication series

Namepaper no 655
PublisherGerman Acoustical Society (DEGA)

Conference

Conference39. Jahrestagung für Akustik, AIA-DAGA 2013
Abbreviated titleAIA-DAGA
CountryItaly
CityMerano
Period18/03/1321/03/13

Fingerprint

signal generators
roads
warning systems
acoustics
adjusting
noise pollution
vehicles
sensors

Keywords

  • IR-94030
  • METIS-308942

Cite this

Berkhoff, A. P., & van der Rots, R. (2013). Real-time steerable directional sound sources. In Proceedings AIA/DAGA 2013 (pp. 2144-2147). (paper no 655). Berlin: German Acoustical Society (DEGA).
Berkhoff, Arthur P. ; van der Rots, R. / Real-time steerable directional sound sources. Proceedings AIA/DAGA 2013. Berlin : German Acoustical Society (DEGA), 2013. pp. 2144-2147 (paper no 655).
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Berkhoff, AP & van der Rots, R 2013, Real-time steerable directional sound sources. in Proceedings AIA/DAGA 2013. paper no 655, German Acoustical Society (DEGA), Berlin, pp. 2144-2147, 39. Jahrestagung für Akustik, AIA-DAGA 2013, Merano, Italy, 18/03/13.

Real-time steerable directional sound sources. / Berkhoff, Arthur P.; van der Rots, R.

Proceedings AIA/DAGA 2013. Berlin : German Acoustical Society (DEGA), 2013. p. 2144-2147 (paper no 655).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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N2 - Warning signal generators in cars are being developed that have the objective to warn vulnerable road users. Several sensor systems 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 can be designed to generate the specifed warning signal at the location of the vulnerable road user while the acoustic response at other locations is minimized in order to reduce noise pollution. The directional sound beam was realized with an array of controlled acoustic sources. Changes of the relative positions of the vehicle and the vulnerable road user require continuous adjustments of the sound beam. Different methods to generate the sound beam are described and experimental results are shown. Rapid realtime adjustment of the beaming direction is possible even if the beamformer is recomputed everytime a new steering direction is required.

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Berkhoff AP, van der Rots R. Real-time steerable directional sound sources. In Proceedings AIA/DAGA 2013. Berlin: German Acoustical Society (DEGA). 2013. p. 2144-2147. (paper no 655).