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A method for dampening acoustical vibration within a room including providing a grid formed of a plurality of cells defined by panels made from a flexible or deformable material which do not intersect one another such that the grid can be collapsed and expanded in a parallelogram motion. The grid ca

A method for dampening acoustical vibration within a room including providing a grid formed of a plurality of cells defined by panels made from a flexible or deformable material which do not intersect one another such that the grid can be collapsed and expanded in a parallelogram motion. The grid can be positioned above floor level to attenuate acoustical sound within the room.

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1. 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 expan

1. 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; andpositioning 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. 2. The method of claim 1, further comprising installing the grid on a hanging device selected from the group consisting of a cable, a clamp, a clip and a hook. 3. The method of claim 2 wherein the grid further comprises a sleeve adjacent an upper perimeter thereof, and further comprising an elongated reinforcing member provided in the sleeve to prevent deformation of the grid in the expanded position. 4. The method of claim 3 wherein the sleeve is integrally formed with the grid. 5. The method of claim 1 wherein the flexible or deformable material comprises a textile. 6. The method of claim 1 wherein the flexible or deformable material has both light diffusion and acoustical damping properties. 7. The method of claim 2 further comprising removing the grid from the hanging device and returning the grid to the collapsed position for storage. 8. The method of claim 1 wherein the wall surface is a ceiling within the room.