The standard method of measuring the effective sound absorption coefficient & of a material is through an investigation of its effect on the reverberation time or the decay rate of sound pressure level in an enclosure. Specially constructed enclosures known as reverberation chamber are generally use for this purpose. Three types of material to be tested in this project are : i) Fibetex R60 ii) Fibertex B40 iii) Softboard . At end of this project, the suitable local absorbtive material for a certain range of noise frequency can be identified and proposed to factory used.