<?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">phonetics</topic></authority><related type="other"><topic>phoneticians</topic></related><related type="other"><topic>phonology</topic></related><related type="broader"><topic>theoretical linguistics</topic></related><related type="broader"><topic>acoustics</topic></related><variant type="other"><topic>phonetic</topic></variant> <note xml:lang="en"><![CDATA[ Study of the production, transmission, perception, classification, and physical or acoustical properties of speech sounds and how they are organized in language. For the study of the sound patterns and systems of languages, use "phonology." ]]></note></mads>