Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - In situ values of sound absorption under direct sound field conditions
German title
Lärmschutzvorrichtungen an Strassen - Prüfverfahren zur Bestimmung der akustischen Eigenschaften - Teil 5: Produktspezifische Merkmale - In-situ-Werte der Schallreflexion in gerichteten Schallfeldern
Original language
English,
French
Pages
150
Original language
English,
French
Pages
150
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