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      The effects of stage house coupling on multipurpose auditorium acoustics

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      Author(s)
      Gül, Zühre Sü
      Eşmebaşı, M.
      Bora Özyurt, Z.
      Date
      2022-09
      Source Title
      Applied Acoustics
      Print ISSN
      0003-682X
      Electronic ISSN
      1872-910X
      Publisher
      Elsevier
      Volume
      198
      Pages
      1 - 14
      Language
      English
      Type
      Article
      Item Usage Stats
      10
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      7
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      Abstract
      The current scientific research on coupled spaces has augmented the design applications of reverberation chambers and stage house-coupling in music venues in the last couple of decades, and vice-versa the halls that incorporate room acoustics coupling has attracted attention of researchers in the field. Most of the cases, depict the room acoustics coupling from a positive perspective, as the non-exponential energy decay aids clarity and reverberance, which are two simultaneous requirements to satisfy in a music hall. However, not many studies discuss the negative effects of a potential non-exponential energy decay in an auditorium, or a multi-function hall, if not intentionally and carefully utilized. This study aims to highlight the importance of stage tower design in an auditorium, which is aimed to be used dominantly for speech-oriented activities and occasionally to host recitals. The paper initially introduces the acoustical design phases of the auditorium that is within the Ted Ankara Foundation College Performance Art Center. Acoustical simulations are utilized during design phase. The selected auditorium has multiple construction phases, including pre and post acoustical treatment within the stage. Accordingly, field tests are held before and after stage tower acoustical interventions. Collected impulse responses are analyzed by Bayesian decay parameter estimations, in both stages of construction. The discomfort caused by the surplus sound energy within the stage tower, specifically the excessive late coming low frequency sound energy -boomy sound-, are validated by the double-slope sound energy decay within the hall. The desired acoustical comfort could only be provided when the multi-slope sound energy decays are overcome by sound absorptive treatment applications in stage tower and its auxiliary side and back spaces.
      Keywords
      Acoustical design
      Auditorium acoustics
      Coupled volumes
      Multi-slope sound energy decay
      Stage house coupling
      Permalink
      http://hdl.handle.net/11693/111245
      Published Version (Please cite this version)
      https://dx.doi.org/10.1016/j.apacoust.2022.108996
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