Abstract: A crosstalk cancellation filter set configured for use in delivering binaural signals to human ears is provided. The crosstalk cancellation filter set includes a pressure matching system configured to perform spatial filtering or sound field control and an obstructed field model in communication with the pressure matching system. The crosstalk cancellation filter set is configured to take acoustic advantage of scattering effects and occlusional effects caused by violations to a free-field assumption, thereby delivering improved crosstalk cancellation acoustic displays to a listener without the use of headphones.

Abstract: A tool and method applies a cover to an item receiving face. A base plate has an item receiving surface. A moveable lower plate has a die bore corresponding to the cover receiving surface of the item and a receiving surface for a laminate cover material having an adhesive layer and a decorative base layer. An upper plate includes a channel corresponding with the lower plate die and a punch secured within the upper plate channel and slideably engageable within the die. The punch has a centrally located bore and cutting edge. A compressible member disposed within the punch bore has a curvolinear free end. The upper plate is displaced towards the lower plate in a closed state to slidingly engage the punch within the die and the punch cutting edge punches out the cover while the compressible member presses the cut cover onto the item receiving face.

Abstract: A vehicle trim panel is secured to a vehicle structural panel by providing a vehicle trim fastener having spaced arms which embrace and overlie the legs on a mount which is seated over the edge of a vehicle structural panel. The embracing arms and corresponding legs prevent lateral shifting of the trim panel relative to the structural panel.

Abstract: An expandable baffle apparatus for sealing a cavity of an automobile or the like includes a piece of heat expandable sealing material that is formed in a shape corresponding to the shape of the cross section of the cavity to be sealed. A support element supports the piece of sealing material at the predetermined cross section while the apparatus is subjected to an elevated activation temperature at which the sealing material expands to seal the cavity at the cross section. The support element is formed of a material having a melting point higher than the activation temperature, and includes an open lattice formed of a shape corresponding to the shape of the cross section of the cavity. The sealing material is supported on the lattice so that when the sealing material is activated, the material expands radially to fill the cross section of the cavity and longitudinally through the lattice.