IfcSoundScaleEnum
Definition from IAI: This enumeration defines the different sound scales: DBA: Decibels in an A-wieghted scale DBB: Decibels in an B-wieghted scale DBC: Decibels in an C-wieghted scale NC: Noise criteria NR: Noise rating USERDEFINED: User-defined sound scale NOTDEFINED: Undefined sound scale HISTORY: New enumeration in IFC R2.0
Definition from IAI: This enumeration defines the different sound scales:
HISTORY: New enumeration in IFC R2.0
EXPRESS specification: