Contents Namespaces | Ansys.ACT.Automation.Mechanical Namespace | Analysis | Print page AddAcousticFreeSurface()Creates a new AcousticFreeSurfaceDeclaration Syntaxpublic virtual AcousticFreeSurface AddAcousticFreeSurface() « AddAcousticFarFieldRadationSurface() AddAcousticImpedanceBoundary() »