✦ LIBER ✦

Acoustical properties of fibrous absorbent materials

✍ Scribed by M.E. Delany; E.N. Bazley

Publisher: Elsevier Science
Year: 1970
Tongue: English
Weight: 427 KB
Volume: 3
Category: Article
ISSN: 0003-682X
DOI: 10.1016/0003-682x(70)90031-9

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✦ Synopsis

Results are presented of an investigation into the acoustical properties of a range of fibrous absorbent materials. Measured values of characteristic impedance and propagation coefficient are shown to normalise as a function of frequency divided by flow-resistance and can be represented by simple power-law functions. Absorption coefficients of thin layers of material over a range of flow-resistance values are also

shown. Supplementary data provide a basis for estimating the flow-resistance of a material from its bulk density.

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