Domain Source
Use the Domain Source node to define a source, the right-hand side of the governing diffusion equation. The source can be a constant value defined inside a small volume, it can be a function of time, or it can a function of space. The value corresponds to the total emitted power Q of the source it is automatically transformed into a power density q by dividing with the source domain volume (calculated automatically).
Domain Source
How you define the domain source 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 Domain source Q(SI unit: W).
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For Octave bands, 1/3 octave bands, or User defined bands, enter a Domain source Q(SI unit: W) in each row corresponding to the Band Number.