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Application des techniques de contrôle actif à la reproduction étendue de champs sonores basses fréquences

Abstract : Using "classical" spatialization methods is not appropriate to reproduce low-frequency sound fields, due to the specificities of sound reproduction at these frequencies. Instead, some strategies inherited from active noise control could be used, which consist in using a loudspeaker array to control the sound field measured by microphones located at the surface of the volume where the sound reproduction is intended. This work aims at studying both numerically and experimentally these surfacic sound reproduction methods. First, the behaviour of set-ups using strategies of this kind has been simulated in free-field conditions. The results have then been compared to those of an active noise control experiment done in a anechoic chamber. Finally, the feasibility of performing sound reproduction using surfacic strategies in a specially-designed cabin has been studied. Results show that the cabin may accurately reproduce low-frequency plane waves traveling around a listener.
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https://tel.archives-ouvertes.fr/tel-00174230
Contributor : Nicolas Epain <>
Submitted on : Friday, September 21, 2007 - 6:26:43 PM
Last modification on : Thursday, January 23, 2020 - 6:22:03 PM
Long-term archiving on: : Monday, September 24, 2012 - 12:40:29 PM

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  • HAL Id : tel-00174230, version 1

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Nicolas Epain. Application des techniques de contrôle actif à la reproduction étendue de champs sonores basses fréquences. Acoustique [physics.class-ph]. Université de la Méditerranée - Aix-Marseille II, 2007. Français. ⟨tel-00174230⟩

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