Patent ID: 8069947

Claim:
A sound attenuation canopy for reducing levels of sound passing through an opening comprising: a rectangular sound absorbing member comprised of a resilient sound absorbing material and having a first end, a second end and an uninterrupted intermediate portion extending between the first end and the second end, wherein the first end is configured to attach to a periphery of the opening at a first location, the second end is configured to attach to the periphery of the opening at a second location and the intermediate portion is configured to be deformed into an arched shape or a peaked shape spaced apart from and above the opening wherein the sound absorbing member is arch-shaped or peak-shaped in elevation and defines an apex more distant from the opening than points on either side of the apex; wherein, when the first end and the second end of the sound absorbing member are attached to the periphery of the opening, at least one side opening is at least partially defined by the intermediate portion and the perimeter of the opening and the intermediate portion is entirely curved or angled relative to a plane of the opening except at the apex, and wherein a sound transmission path extending between the opening and the side opening comprises at least one change of direction greater than 45 degrees.