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Meaningful acoustical parameters for open-air theatres

  • J. H. Rindel
  • 2nd Symposium: The Acoustics of Ancient Theatres
  • July
  • 2022
  • Verona, Italy

Abstract

The reverberation time and other acoustical parameters defined in ISO 3382-1 have been derived with closed spaces in mind, and it is not obvious that the same parameters are meaningful in an open-air theatre. Low reflection density and lack of late reflections mean that the reverberation parameters are unreliable. It is necessary to re-think the need for acoustical parameters. The most important acoustical features of a theatre are that speech is sufficiently loud and clear. In addition, an echo-parameter is needed.

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