Reply To: Diffuse Sound Field Settings

[Erik Kostson]

Hi

I cannot provide detailed answers, but 

Normally we look at TL of plates when using that so the diffuse and transmitted energy is a ratio so does not really matter (incoming diffuse energy since it isa ratio), as TL is Energy/Power_diffuse_in/Energy/Power_transmitted .

See an example (APDL help manual) here on what we mean:

Acoustic Analysis Guide (APDL) . 13.15. Example: Structural Panel Subject to Excitation From a Diffuse Sound Field

This example problem demonstrates the use of the FLUID220 element to predict the transmission loss of a structural panel under excitation from a diffuse sound field.

All the best

Erik