PARAM, PREFDB
Bulk Data Entry Used to activate dB and dB(A) output in H3D and PUNCH file formats for Fluid-Structure Coupled Frequency Response Analysis.
Parameter | Values | Description |
---|---|---|
PREFDB | Real > 0.0 No default |
This parameter specifies
the reference pressure value used to calculate the pressure level in
decibels (dB) and A-weighted decibels (dB(A)). The pressure level
in decibels (dB) can be calculated using the following
equation:
PLdB=20log10(|PL|PREFDB)
Where,
Note:
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