The application of kapok fibre as sound absorption material in real auditorium

• Autores: J. Sarwono, A. Emil, W.S. Subowo, H. Onggo
• Localización: Proceedings of the ISRA 2007 Seville, Vol. 3, 2008 (Oral Session Communications), ISBN 9788469082676
• Idioma: español
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• Resumen

  • Kapok fibre has a good acoustic properties, i.e. the random coefficient absorption is comparable to glass wool with the same density and thickness. The kapok fibre sound absorber modules have been made and applied in a real auditorium, at the first floor of LIPI building No.10, in Bandung, Indonesia. The acoustics performances of the auditorium room before and after application of sound absorber have been measured. The result shows that by covering 30% of its interior surfaces with kapok sound absorber combined with curtains on the glass door and windows, the clarity (C-80) and intelligibility (D-50) are increase by 300% and 200%, respectively, comparing to the untreatment condition. The treatment also reduced the reverberation time by 40%.