<xs:complexType name="IfcSoundValue">
<xs:complexContent>
<xs:extension base="ifc:IfcPropertySetDefinition">
<xs:sequence>
<xs:element name="SoundLevelTimeSeries" nillable="true" minOccurs="0">
<xs:complexType>
<xs:choice>
<xs:element ref="ifc:IfcTimeSeries" />
</xs:choice>
</xs:complexType>
</xs:element>
<xs:element name="Frequency" type="ifc:IfcFrequencyMeasure" />
<xs:element name="SoundLevelSingleValue" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcDerivedMeasureValue" />
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
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