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      An experimental study on speech interference in public leisure spaces

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      Author
      Yilmazer, Semiha
      Gezginer, Pelin Meriç
      Date
      2010
      Source Title
      39th International Congress on Noise Control Engineering 2010, INTER-NOISE 2010
      Publisher
      Institute of Noise Control Engineering
      Volume
      2
      Pages
      1060 - 1067
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
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      Abstract
      Physical comfort requirements of users in the non-acoustical spaces, leisure space, and usability of the space in long-term period should be taken into consideration in terms of sustainability of the space. The aim of this study is to investigate the speech interference of users' in an openplaned public leisure space. Bilkent Rollhouse was chosen as a leisure space because of its variance of activities in an open-plan like bowling, dart, billiards, play station and dining area. In this respect, a questionnaire was prepared to check the perception of sound of different user types in the area. The questionnaires were applied at the most crowded day of the week that is Friday and in between 18:00 to 21:00. The results of the survey were evaluated statistically. In addition to this, the equivalent continuous noise level, Leq, of the leisure space were taken in parallel to the questionnaire application to the users. Measuring of speech intelligibility via articulation index (AI) subjectively was the second phase of this study. Via application of the word list to the normal hearing users, the AI contours were prepared. Finally, objective and subjective measurements were analyzed in terms of speech interference during leisure activity in the space. As a leisure space, the relation between noise annoyance ratings and Leq did not show any significant difference in dart, billiards and play stations activities. However, in bowling activity and dining area, it was found that there is a significant relation between noise annoyance and Leq. This study reveals that users submit ambient noise of the space during leisure activity, they get in a common behaviour psychologically, they adjust their vocal noise that they create and finally these issues lead controlling of ambient noise by them. It means that users give up loudly speaking, they accept repeating or silence, focus on meal and they do not like getting in uncomfortable situation since their main activity is dining. For further study, the number of the samples in not only different leisure spaces, but also measurement points and sampling times should be increased to make clear hypothesis given above, since the study reveals completely different behaviour that is introduced in literature like cocktail party effect phenomenon.
      Keywords
      AI
      Leisure spaces
      Leq
      Noise annoyance rating
      Speech interference
      Ambient noise
      Articulation indexes
      Cocktail party
      Experimental studies
      Leisure activities
      Leisure spaces
      Leq
      Long-term period
      Measurement points
      Noise annoyance
      Noise levels
      Normal hearing
      Second phase
      Speech interference
      User type
      Word lists
      Artificial intelligence
      Audition
      Behavioral research
      Noise pollution
      Speech intelligibility
      Surveys
      Acoustic noise
      Permalink
      http://hdl.handle.net/11693/28446
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