Based on the analysis of the characteristics of sound wave propagation & a duct, three Active Noise Control (ANC) systems, which &corporate different arrangements of the secondary loudspeaker have been examined experimentally. Calculated and measured transfer functions of the plant and the error pat
Performance of noise barriers with various edge shapes and acoustical conditions
β Scribed by Takashi Ishizuka; Kyoji Fujiwara
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 541 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0003-682X
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
It is well-known that an absorptive obstacle installed on the edge of a noise barrier improves sound shielding efficiency without increasing the height of the barrier. This paper examines the sound shielding efficiency of a noise barrier with an acoustically ''soft'' cylindrical edge. ''Soft'' indic
In this paper, a method of analysis for the free vibration of a three-layer sandwich arch with an elastic or viscoelastic core, and with various kinds of axis-shape and boundary conditions is presented. The characteristic equation of the free vibration is derived by applying Green functions. The Gre