✦ LIBER ✦
Free field surface impedance measurements of sound-absorbing materials with surface coatings
✍ Scribed by J.F. Allard; C. Depollier; P. Guignouard
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 354 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0003-682X
No coin nor oath required. For personal study only.
✦ Synopsis
A BS TRA C T
A method has been previously worked out by one of the authors, to measure the surface impedance of glasswools and plastic foams in normal and oblique incidence, in free field, with two microphones. Using an improved version of this method, surface impedance measurements of two sound-absorbing materials with surface coating are presented and compared with measurements performed in a reverberant room. It appears that measurements with our method are possible, in normal and oblique incidence,for these materials.