<?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">PCM</topic></authority><related type="broader"><topic>digital file formats</topic></related><variant type="other"><topic>Pulse Code Modulation</topic></variant><variant type="other"><topic>Pulse-Code Modulation</topic></variant> <note xml:lang="en"><![CDATA[ The most common technique for converting analog signals into digital form, involving sampling. Pulse Code Modulation is not a universally accepted standard, but rather a technique used in a variety of applications from telephony to CD production. CD quality music is sampled generally at 44.1 kHz at 32 bits per sample. ]]></note></mads>