Compact loudspeaker arrays for directional sound reproduction

Loudspeakers and loudspeaker arrays that reproduce sound highly directionally are interesting in a variety of applications, such as generating spatial effects and ambience, mitigating the room effects, or directional sound reproduction for public address systems and teleconferencing terminals.

Our loudspeaker array is a result of combining signal processing and acoustical design. Its directional reproduction is highly consistent over a wide range of frequencies and without noticeable coloration. Additionally, thanks to the loudspeaker arrangement, reproduced sound can be steered towards multiple directions, which comes in handy for targeted sound reproduction and multichannel sound reproduction in rooms.

Related publications

  • [PDF] M. Kolundzija, “Spatial acoustic signal processing,” PhD Thesis, 2012.
    [Bibtex]
    @phdthesis{kolundzijaspatial,
    title={Spatial Acoustic Signal Processing},
    author={Kolundzija, Mihailo},
    year={2012},
    school={PhD thesis, {EPFL}, Lausanne, Switzerland}
    }
  • [PDF] M. Kolundzija, C. Faller, and M. Vetterli, “Design of a compact cylindrical loudspeaker array for spatial sound reproduction,” in Audio Engineering Society Convention 130, 2011.
    [Bibtex]
    @inproceedings{kolundzija2011design,
    title={Design of a Compact Cylindrical Loudspeaker Array for Spatial Sound Reproduction},
    author={Kolundzija, Mihailo and Faller, Christof and Vetterli, Martin},
    booktitle={{A}udio {E}ngineering {S}ociety {C}onvention 130},
    year={2011},
    organization={Audio Engineering Society}
    }
  • [PDF] M. Kolundzija, C. Faller, and M. Vetterli, “Baffled circular loudspeaker array with broadband high directivity,” in Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on, 2010, pp. 73-76.
    [Bibtex]
    @inproceedings{kolundzija2010baffled,
    title={Baffled circular loudspeaker array with broadband high directivity},
    author={Kolundzija, Mihailo and Faller, Christof and Vetterli, Martin},
    booktitle={{A}coustics {S}peech and {S}ignal {P}rocessing ({ICASSP}), 2010 {IEEE} {I}nternational {C}onference on},
    pages={73--76},
    year={2010},
    organization={IEEE}
    }

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