𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Acoustic attenuation measurements using parametric arrays

✍ Scribed by J.Y. Guigné; V.H. Chin; S.M. Solomon


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
506 KB
Volume
27
Category
Article
ISSN
0041-624X

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Tunable acoustic absorber using a micro
✍ Satoshi Konishi; Mitsuhiro Yoda; Susumu Sugiyama; Sadao Akishita 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 696 KB

We propose a tunable acoustic absorbing device using a Helmholtz resonator. Timing the resolution frequency of the device to a desired frequency makes it possible to absorb variable sounds. The designed device forms an array of the Helmholtz resonator with a tunable compliance. The experimental resu

Site attenuation measurements using shor
✍ Atsuya Maeda; Akira Sugiura; Nobuo Kuwabara; Shogo Usuda 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 200 KB

Use of a shortened dipole with its element length fixed at the 80-MHz resonator length or a half-wavelength is studied for the site-attenuation measurement of the interference-wave measurement field. Since this shortened dipole antenna is specified as the standard antenna for interference wave measu

ACOUSTIC NOISE SOURCE MODELLING BASED ON
✍ S. BRÜHL; A. RÖDER 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 260 KB

A method will be presented which allows a construction of an acoustic source model based on the analysis of microphone array measurements during a train pass-by. The conventional array beam-forming technique is used as a kind of pre-processing or "rst order analysis to calculate in a second step the