Use

Provides the insertion loss from a plenum which behaves as a expansion chamber.

Note this element should not be used where the width or the height of the plenum is less than 1.5x the distance between the inlet and outlet, as the plenum may not be acting as an expansion chamber.

User Inputs

1. Plenum width (m)
2. Plenum length (m)
3. Plenum height (m)
4. Inlet width (m)
5. Inlet height (m)
6. Outlet width (m)
7. Outlet height (m)
8. Distance (m): Distance between inlet and outlet (m)
9. Lining thickness: 25, 50, 75 or 100 mm

SoundSurfer Input

Sound Power Level (red node) from an upstream source.