Estimating the Sabine absorption coefficient of fibrous materials for various backing conditions

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Since absorber manufacturers cannot provide the absorption coefficients for all possible mounting conditions, acousticians have difficulties knowing the absorption characteristics of their own configurations. This paper aims to predict the Sabine absorption coefficient for various mounting conditions by extracting the air flow resistivity of the test specimen and the frequency-dependent effect of the chamber on the measured absorption coefficients. Two homogeneous fibrous absorbers are measured for experimental validation, showing good agreements between the predictions and measurements
Original languageEnglish
Title of host publicationProceedings of the 24th International Congress on Sound and Vibration
Number of pages6
Publication date2017
ISBN (Electronic)978-1-906913-27-4
Publication statusPublished - 2017
EventThe 24th International Congress on Sound and Vibration - Park Plaza Westminster Bridge Hotel, London, United Kingdom
Duration: 23 Jul 201727 Jul 2017


ConferenceThe 24th International Congress on Sound and Vibration
LocationPark Plaza Westminster Bridge Hotel
CountryUnited Kingdom


  • Fibrous absorbers
  • Sabine absorption coefficient
  • Flow resistivity extraction

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