Abstract: A method was designed to measure the mechanical spectrum of materials from liquid to solid state in a composite reed vibration system. More experiments were performed to check the reliability of this method with the variation of deposited area. Negligible differences in the spectra are found with different deposited areas. However, a clear distinction is observed between single layer and double layer depositing. Considering the results of both cooling and subsequent heating routes, it seems more reliable using double layer depositing.