Patent ID: 8839590

Claim:
A method for dampening acoustical vibration within a room comprising: providing a grid formed by a plurality of superimposed, non-intersecting panels having a depth and made from a flexible or deformable material such that the grid is collapsible into a generally flat collapsed position and expandable through a parallelogram movement to an expanded position in which a two-dimensional array of cells are defined by portions of the panels, each of said cells having an open center portion defined by the depth of the panels and the open center portion of each of said cells terminates in openings at a first end and a second end of each of said cells, each of said cells having a longitudinal axis extending between the openings at the first end and the second end and through the open center portion of each of said cells; expanding the grid from the collapsed position to the expanded position; and positioning the grid adjacent a wall surface in the room at a selected distance above a floor level so that the openings at one of the first end and the second end of the two-dimensional array of cells are open to the wall surface and the openings at the other of the first end and the second end of the two-dimensional array of cells are open to the room to attenuate acoustical sound within the room; wherein positioning the grid adjacent the wall surface in the room at the selected distance above the floor level comprises positioning the grid so that the longitudinal axis of the plurality of cells is substantially perpendicular to the wall surface.