UNE-EN ISO 140-1:1998/A1:2005

Acoustics - Measurement of sound insulation in buildings and of building elements - Part 1: Requirements for laboratory test facilities with suppressed flanking transmission - Amendment 1: Specific requirements on the frame of the test opening for lightweight twin leaf partitions (ISO 140-1:1997/AM 1:2004)

ACOUSTIQUE. MESURAGE DE L'ISOLEMENT ACOUSTIQUE DES IMMEUBLES ET DES ÉLÉMENTS DE CONSTRUCTION. PARTIE 1: SPÉCIFICATIONS RELATIVES AUX LABORATOIRES SANS TRANSMISSIONS LATÉRALES. (ISO 140-1:1997).