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    Application of a multi-criteria decision technique to assignation of acoustic classes
    (Societe Francaise d'Acoustique, 2024) Kurra, Selma; Dumen, Ayca Sentop
    Acoustic performance evaluation of buildings prior to the acoustic classification, requires consideration of a number of factors with the corresponding quantitative criteria to be satisfied. It is of question how much the deviations can be compensated and whether all performance factors are equally important. This paper presents the results of a study on assigning priorities for each acoustic factor by using the analytic hierarchy process (AHP) – a multi-criteria decision technique – based on the expert evaluations. Eleven acoustic consultants rated seven acoustic factors, i.e. regulatory criteria of sound insulation, sound level and reverberation time, in pairwise comparisons. The data were aggregated after a consistency check and weights of each acoustic factor were calculated as well as weights of six acoustic performance classes ranging from A to F. The outcomes of this study resulted in a decision matrix, named as “acoustic scorecard” which can be used to obtain a single-number rating index for acoustic quality of buildings. © International Congress and Exposition on Noise Control Engineering, Internoise 2024.
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    Enforcement of acoustic performance assessment in residential buildings and occupant satisfaction
    (Routledge Journals, Taylor & Francis Ltd, 2020) Dumen, Ayca Sentop; Bayazit, Nurgun Tamer
    ISO/NP TS 19488 constitutes a basis for classifying residential buildings according to their acoustic performance. The new Turkish Regulation defines the minimum requirements for all building types and introduces a similar classification scheme. This paper aims to contribute to the applicability discussions by clarifying and testing the methodology that is to be pursued in order to verify the acoustic performance of a building or a dwelling unit, and to reveal possible questions. In order to test the enforcements, some field studies were conducted. Acoustical measurements were performed in 6 selected residential buildings and 136 occupants' were interviewed with a questionnaire. The acoustic performance was evaluated based on the noise levels, sound insulation and reverberation time. The occupants' data were gathered in face-to-face meetings and the responses were analysed to reveal annoyance issues and the overall satisfaction with the acoustical environment. The results showed that the verification processes described in the ISO/NP TS 19488 and the Regulation could be easily applied. However, some issues regarding the applicability and interpretations were discovered and presented in the discussion. The measurement results were consistent with the subjective evaluation in most cases. The overall satisfaction with the acoustical environment depended on more aspects than examined annoyances.