Etude sur Maquette des Effets d'Interferences Obtenu avec un Ecran Ajoure Dephaseur. Verification Theorique et Applications Possibles
Mots-clés :
noise abatement, modelling, interference effects, out-of-phase perforated barrier, destructive interferences, environmental acoustics, low frequency noiseRésumé
On a étudié la possibilité de créer des interférences destructives entre les ondes sonores transmises à travers un nouveau type d'écran ajouré, et les ondes diffractées par son sommet. Les mesures ont été effectuées au Centre des Maquettes du C. S. T. B. de Grenoble, laboratoire spécialement conçu et équipé pour la représentation des phénomènes acoustiques sur modèles réduits à petite échelle. Les résultats expérimentaux, confirmés par la théorie élaborée à 1'Ecole Polytechnique de Montréal, montrent que l'on peut obtenir des effets d'interférences intéressants aux basses fréquences, localisés autour de la ligne d'ombre formée par l'écran. Ce procédé est actuellement en cours d'application en vue d'améliorer l'efficacité aux basses fréquences des écrans conventionnels.Fichiers supplémentaires
Publié-e
Comment citer
Numéro
Rubrique
Licence
Author Licensing Addendum
This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:
-
Retained Rights: The Author(s) retain(s) the following rights:
- The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
- The right to use the Work in the Author's teaching activities and presentations.
- The right to include the Work in a compilation for the Author's personal use, not for sale.
-
Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.
-
Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.
-
No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.
-
Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.