An active noise barrier with unidirectional secondary sources

  title={An active noise barrier with unidirectional secondary sources},
  author={W. Chen and Wei Rao and H. Min and Xiaojun Qiu},
  journal={Applied Acoustics},
  • W. Chen, Wei Rao, +1 author Xiaojun Qiu
  • Published 2011
  • Engineering
  • Applied Acoustics
  • An active noise barrier with unidirectional secondary sources is investigated in this paper, where the unidirectional secondary source consists of two closely located loudspeakers with pre-adjusted phase difference. The secondary sound field of the unidirectional sources is adjusted to maximally match the primary sound field in the shadow zone behind the barrier. It is shown both numerically and experimentally that the noise reduction performance of the active noise barrier can be improved… CONTINUE READING
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