|Document ID (ISN)||68428|
|ISSN - Serial title
||0007-9952 - Cahiers de notes documentaires - Hygiène et sécurité du travail
|Convention or series no.
||Influence of noise leaks on the acoustic efficiency of machine enclosures
||Importance des fuites acoustiques sur l'efficacité globale d'un capotage de machine [in French]|
||4th Quarter 1996, No.165, Note No.2036-165-96, p.509-518. Illus. 12 ref.
||http://www.inrs.fr/htm/importance_fuites_acoustiques_sur_efficacite.html [in French]
||Acoustic enclosures and hoods are widely used to reduce machine noise in the industrial environment. Unfortunately these devices are never entirely soundproof, and noise leakage tends to reduce their overall efficiency. Theoretical models exist for predicting the acoustic behaviour of slits in enclosure panels by calculating the amount of energy transmitted and describing the spatial distribution pattern (directivity) of the radiated sound field. This paper briefly examines two of these models which are simple to use for practitioners working on the "sound-tightness" of enclosures, and proposes technical solutions for reducing noise transmission through most types of commercial enclosures at the design stage: sealing compounds, flaps and profiled seals, noise baffles, acoustically absorbent materials, reactive mufflers.
||noise; acoustics; leakage; sound attenuation; acoustic enclosure; noise control
||sound absorption; rim exhaust; sound transmission loss
||D - Periodical articles
|Country / State or Province||France|
||Noise, hearing and vibration
|Broad subject area(s)