# 8.11.2.91 IfcSoundPressureLevelMeasure

## 8.11.2.91.1 Semantic definition

A sound pressure level measure is a measure of the pressure fluctuations superimposed over the ambient pressure level with units of decibels with a reference value of micropascals.

Type: REAL

## 8.11.2.91.2 Formal representation

TYPE IfcSoundPressureLevelMeasure = REAL;
END_TYPE;