Sökning: "periodically perforated facing"
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1. Absorption Characteristics of Periodically Perforated Suspended Ceilings
Sammanfattning : The sound absorption characteristics of resonant absorbers, implemented as perforated suspended inner ceilings attached with thin porous layers, are investigated. Several existing theories model the principal absorption mechanisms, but the interaction with the outer sound field influences the absorption in ways that can be modelled with new approaches. LÄS MER
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