Indoor Sonic Boom Reproduction Using ANC
Abstract
The European programs for development of supersonic air-flights involve new studies on the human perception of sonic boom. Because this noise includes high-level components at very low-frequency, the usual psycho-acoustic tests with headphones are not relevant; instead, the original sound-field can be reproduced with many loudspeakers in a small room, but the loudspeakers must be controlled for an accurate reproduction, both in time and space, in an area large enough to enclose a listener's head. In this paper, Active Noise Control is applied to sonic boom reproduction through Boundary Surface Control (as named by S.Ise) of the acoustic pressure around a listener. A small room was built at LMA with sixteen powerful low-frequency acoustic sources in the walls. Frequency and time-domain numerical simulations of sonic boom reproduction in this room are given, including a sensitivity study of the coupling between a listener's head and the incident sonic boom wave which combine into the effective sound-field to be reproduced.
Keywords
Cite
@article{arxiv.physics/0506118,
title = {Indoor Sonic Boom Reproduction Using ANC},
author = {Nicolas Epain and Emmanuel Friot and Guy Rabau},
journal= {arXiv preprint arXiv:physics/0506118},
year = {2007}
}