Building elements: Sound insulation, intensity scanning under laboratory conditions (NT ACOU 084) Posted onMarch 15, 1992July 15, 2020Author Report #: NT ACOU 084 Approved: March 1992 Download pdf Size: 104.34 KB Abstract This Nordtest method specifies a sound intensity scanning method to determine the sound reduction index, as defined by IS0 140/3, of a building element.
