<xs:element name="noiseLevel">
  <xs:annotation>
    <xs:documentation xml:lang="en">Specifies the level of background noise</xs:documentation>
    <xs:appinfo>
      <identifier>http://w3id.org/meta-share/meta-share/noiseLevel</identifier>
      <label xml:lang="en">noise level</label>
    </xs:appinfo>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:anyURI">
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/high2">
        <xs:annotation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/high2</identifier>
            <label xml:lang="en">high</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/low2">
        <xs:annotation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/low2</identifier>
            <label xml:lang="en">low</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="http://w3id.org/meta-share/meta-share/medium2">
        <xs:annotation>
          <xs:appinfo>
            <identifier>http://w3id.org/meta-share/meta-share/medium2</identifier>
            <label xml:lang="en">medium</label>
          </xs:appinfo>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
</xs:element>