Specifies the reference value when evaluating the results of the order analysis in the time domain.
| Definition | OrdATOSigRefValue, Real variable |
| 1E-300 <= OrdATOSigRefValue <= 1E300 |
The default value for the variable is 1. The default value for airborne noise is 2E-5.
The following formula is used for the conversion of the linear sound pressure into the sound pressure level Lp:

with
p0 = 2E-5 Pa for airborne sound.