Room Coupling
Use the Room Coupling node to couple rooms together allowing an acoustic energy flux back and forth. This can be used to model transmission through walls or openings defined in terms of their transmission loss. The feature is also used to couple rooms that are connected through a large open surface. It is also available as the Pair Room Coupling.
Transmission Loss
How you define the transmission loss depends on the choice of Band Input Type for The Acoustic Diffusion Equation.
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If the Band Input Type is Flat (continuous) enter a Transmission loss TL (SI unit: dB).
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For Octave bands, 1/3 octave bands, or User defined bands, enter a Transmission loss TL (SI unit: dB) in each row corresponding to the Band Number.
Continuity
Select the Force continuity checkbox to constrain the dependent variable resulting in a zero transmission loss. Use this option when rooms are coupled through large open surfaces. Note that the absorption properties of these surfaces need to be set correctly independent of this option.
Constraint Settings
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog.