期刊
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
卷 53, 期 2, 页码 596-600出版社
KOREAN PHYSICAL SOC
DOI: 10.3938/jkps.53.596
关键词
sound transmission loss; impedance tube; flow resistivity
资金
- Ministry of Education, Science & Technology (MoST), Republic of Korea [K08003] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The sound transmission loss of several sound absorbent materials was measured by using an impedance tube and was compared with theoretically calculated values. The impedance tube system designed for the testing consisted of an upstream tube, a sample-holder section and a downstream tube. The transfer function method and a four-pole matrix analysis were used in measuring and calculating the sound transmission loss, respectively. Good agreement between the measured and the theoretical values was obtained.
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