<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">acoustical insulation</topic></authority><related type="broader"><topic>insulation by function</topic></related><variant type="other"><topic>insulation, acoustic</topic></variant><variant type="other"><topic>acoustic insulating material</topic></variant><variant type="other"><topic>insulating material, acoustic</topic></variant><variant type="other"><topic>insulation, acoustical</topic></variant><variant type="other"><topic>insulation, sound</topic></variant><variant type="other"><topic>material, acoustic insulating</topic></variant><variant type="other"><topic>sound insulation</topic></variant> <note xml:lang="en"><![CDATA[ Insulation used in a building to resist passage of sound waves. ]]></note></mads>