IfcSoundProperties

Definition from IAI: Common definition to capture the properties of sound typically used within the context of building services and flow distribution systems. Sound properties are sound power or pressure levels across eight octave bands specifying the amount of sound generation or sound attenuation.

IfcSoundProperties is a statically defined property set and should be attached to the instance(s) of IfcDistributionFlowElement through the IfcRelDefinesByProperties relationship.

HISTORY New entity in Release IFC 2x2.
IFC2x Edition 3 CHANGE Optional PointOfMeasurement attribute has been removed. Use an instance of IfcAnnotation to identify the location at which sound properties have been recored.

EXPRESS specification:

ENTITY IfcSoundProperties

SUBTYPE OF (

IfcPropertySetDefinition);

IsAttenuating

IfcBoolean;

SoundScale

OPTIONAL IfcSoundScaleEnum;

SoundValues

LIST [1:8] OF IfcSoundValue;

END_ENTITY;

Attribute definitions:

IsAttenuating	:	If TRUE, values represent sound attenuation. If FALSE, values represent sound generation.
SoundScale	:	Reference sound scale
SoundValues	:	Sound values at a specific frequency. There may be cases where less than eight values are specified.

Inheritance graph

ENTITY IfcSoundProperties;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcPropertyDefinition;

INVERSE

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

ENTITY IfcPropertySetDefinition;

INVERSE

PropertyDefinitionOf

SET [0:1] OF IfcRelDefinesByProperties FOR RelatingPropertyDefinition;

DefinesType

SET [0:1] OF IfcTypeObject FOR HasPropertySets;