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2. Modeling hoods and hood elements
Several more or less sophisticated models have been proposed in the literature. It should be noted that these models, which are based on restrictive assumptions, are relevant depending on the type of encapsulation. For a given enclosure, they can be adapted to only certain zones of the frequency range.
2.1 Modeling enclosure walls
The transmission coefficient of a wall is defined by the ratio
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Modeling hoods and hood elements
Practical problems in casing design
Bibliography
Acoustic structures for enclosures
Standards and norms
- Acoustics – Guidelines for noise reduction using enclosures and cabins. - NF EN ISO 15667 - (2000)
- Acoustics – Determining the sound insulation of enclosures – Part 1: Measurements under laboratory conditions (for reporting purposes). - NF EN ISO 11546-1 - (2009)
- Acoustics – Determining the sound insulation of enclosures – Part 2: On-site measurements (for acceptance and verification purposes). - NF EN...
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