Perforation Acoustic Muffler Assembly and Method of Reducing Noise Transmission Through Objects

摘要

A noise muffler is configured to substantially surround a sound generating object, disposed in or to be disposed in, a structure including a wall or ceiling to be sound limited by, and attenuate sound emitted from the sound generating object, the wall or ceiling including a board having an exposed surface and an opposite surface. The noise muffler has front, rear, left and right sides and a bottom. The sound generating object is positioned in the muffler cavity. The front, rear, left and right sides, and the bottom of the muffler are formed with an outer barrier layer. At least one of the front, rear, left, right sides and bottom of the muffler are formed with a noise absorbing layer positioned adjacent the outer barrier layer to absorb a predetermined amount of sound emitted from the object. At least one of the front, rear, left and right sides includes a first opening into the inner volume of the muffler cavity, the size of which first opening is adjustable.

主权项

1. A noise muffler configured to substantially surround a sound generating object, disposed in or to be disposed in, a structure including a wall or ceiling to be sound limited by, and attenuate sound emitted from the sound generating object, the wall or ceiling including a board having an exposed surface and an opposite surface, noise muffler comprising:
front, rear, left and right sides; a bottom connected to each of the front, rear, left and right sides to form a muffler cavity defining an inner volume; wherein the sound generating object is positioned in the muffler cavity; wherein the front, rear, left and right sides, and the bottom of the muffler are formed with an outer barrier layer; wherein at least one of the front, rear, left, right sides and bottom of the muffler are formed with a noise absorbing layer positioned adjacent the outer barrier layer to absorb a predetermined amount of sound emitted from the object; wherein at least one of the front, rear, left and right sides includes a first opening into the inner volume of the muffler cavity; and wherein a size of the opening is adjustable.