<?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">phonautographs</topic></authority><related type="broader"><topic>phonographs</topic></related><variant type="other"><topic>phonautograph</topic></variant> <note xml:lang="en"><![CDATA[ Early phonographic recording devices of the type invented by Léon Scott de Martinville in 1857, consisting of a horn or barrel focusing sound waves onto a membrane, and creating a visual analogue of soundwaves onto a lampblack-coated cylinder by means of a hog's hair bristle. It was the first sound recording device, but could not reproduce the recorded sound. ]]></note></mads>