A Standing Wave-Duct System for Acoustical Property Prediction of Multi-Layered Noise Control Materials
Based on a hybrid transfer-matrix method, a new standing wave-duct system with four microphones for acoustical property prediction of multi-layered noise control materials is developed in this paper. In this system, the two-load method (TLM) and two-cavity method (TCM) are used for computing the transfer matrix of each material sample. The transfer matrices saved in a database in the system hardisk may be selected for predicting both the absorption ratio and transmission loss of a multi-layered treatment of materials. Verification results suggest that the newly designed standing wave-duct system is effective for acoustical prediction of multilayer material configurations.
Brendan Gan, Yu Gan and Y. Yu
Y. S. Wang et al., "A Standing Wave-Duct System for Acoustical Property Prediction of Multi-Layered Noise Control Materials", Advanced Materials Research, Vols. 378-379, pp. 27-30, 2012