✦ LIBER ✦

Transient response of sound absorbing materials

✍ Scribed by W.S. Gan

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 133 KB
Volume: 48
Category: Article
ISSN: 0375-9601
DOI: 10.1016/0375-9601(74)90232-1

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Acoustic response of fibrous absorbent m

Acoustic response of fibrous absorbent materials to impulsive transient excitations

✍ F. Payri; A. Broatch; J.M. Salavert; D. Moreno 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 965 KB

The parameters used to characterize the acoustic behaviour of fibrous absorbent materials are usually the complex characteristic impedance and the complex wavenumber, which permit the calculation of the airflow resistance and vice versa. Different methods have been satisfactorily used by other autho

A new industry-manufacture of sound abso

A new industry-manufacture of sound absorbing materials

📂 Article 📅 1932 🏛 Elsevier Science 🌐 English ⚖ 97 KB

Sound absorbing double curtains from loc

Sound absorbing double curtains from local textile materials

✍ Y.I. Hanna; M.M. Kandil 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 417 KB

The effect of surface treatment on sound

The effect of surface treatment on sound-absorbing materials

✍ A.J. Price; K.A. Mulholland 📂 Article 📅 1968 🏛 Elsevier Science 🌐 English ⚖ 246 KB

## Measurements of the effect of paint finishes on the acoustic absorption properties of a number of surfaces suitable for use as sound absorbers are reported. It is shown that in no case does the paint fail to alter the absorption characteristics of the sulface. In the case of materials having open

Development of high-performance all-poly

Development of high-performance all-polyester sound-absorbing materials

✍ Kyoichi Watanabe; Yoshiaki Minemura; Kouichi Nemoto; Hiroshi Sugawara 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 712 KB

This paper describes two kinds of newly developed polyester sound-absorbing materials. One mainly consists of modi"ed cross-section polyester fabric, and the other consists of recycled polyester fabric. They provide noticeably higher sound-absorbing performance than traditional materials like shoddy

Free field surface impedance measurement

Free field surface impedance measurements of sound-absorbing materials with surface coatings

✍ J.F. Allard; C. Depollier; P. Guignouard 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 354 KB

## 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 soun