✦ LIBER ✦
ACTIVE CONTROL OF MOVING SOUND SOURCE RADIATION—NUMERICAL MODELLING IN THE SPACE–FREQUENCY AND SPACE–TIME DOMAINS
✍ Scribed by V MARTIN
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 409 KB
- Volume
- 228
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
The active noise control of a moving source such as airplanes landing or taking o!, trains, cars... cannot be achieved directly by using today's classical control of an immobile source. The method described here consists in installing a secondary source screen in the vicinity of the controlled domain. The screen is made up of source masts (which may each contain only one source) and the control uses a small number of masts chosen according to the primary wave incidence. The control is thus shifted from some masts to others. This study rests on numerical modelling in the frequency and time domains 1999 Academic Press