<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31307753</termId><termName>tonoscopes</termName><termType>PT</termType><termNote><![CDATA[ Devices designed to visualize audio waveforms, particularly the human voice. Vibrations were conducted through solid or liquid media, and either projected or photographed to view the result. ]]></termNote><termCreatedDate>2026-03-30 20:22:49</termCreatedDate><relation><relationType>UF</relationType><termId>31307754</termId><termName>tonoscope</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31299038</termId><termName>sound devices</termName><termType>PT</termType></relation></term>  </Zthes>