Abstract

• The acoustic absorption property is commonly used to characterize and rank of the materials to reduce noise. The purpose of this research is to study the sound absorption coefficient of five kinds of Myanmar wood such as Pyinkado (Xylia xylocarpa Taub.), Teak (Tectona grandis), Kanyin (Dipterocarpus), Rubber (Hevea brasiliensis) and Pine (Pinus sp. L.). The experimental investigation of sound absorption coefficient was conducted based on one microphone impedance tube method for the working frequency ranging from 100 Hz to 2600 Hz. The morphology of test wood samples is characterized by optical microscope. The results show that the sound absorption coefficient of five kinds of wood samples depend on the number of vessel as well as vessel diameter and teak wood has better sound absorption coefficient in comparison with others.