NF S31-051:1985 Acoustics. Measurement of the acoustic insulation of buildings and building components. Laboratory measurement of insulation against airborne noise of building components.
2013NF S31-049-1:2013 Acoustics - Laboratory measurement of sound insulation of building elements - Part 1: application rules for specific products
1995NF S31-049-3:1995 Acoustics. Measurement of sound insulation in buildings and of building elements. Part 3 : laboratory measurements of airborne sound insulation of building elements.
1985NF S31-051:1985 Acoustics. Measurement of the acoustic insulation of buildings and building components. Laboratory measurement of insulation against airborne noise of building components.