Abstract: A window pane having a window sash attached thereto to reduce noise transmitted through the window pane. The window sash comprising a bracket and tuned mass damper attached to the bracket at one or more spaced intervals. The one or more spaced intervals are adjusted to tune the window sash to a targeted frequency to reduce the noise transmitted through the window pane. The targeted frequency may be the coincidence frequency of the window pane. The stiffness and/or mass of the bracket and tuned mass damper can also be chosen to reduce the noise transmitted through the window pane.

Abstract: A window sash reduces noise through a window pane. The window sash includes a bracket with a tuned mass damper. The window sash can be tuned by adjusting the interval spacing of attachment points or cut-out areas. The spaced intervals may be equal to a multiple of the wavelength of the frequency targeted for noise reduction. The frequency targeted for noise reduction may be the coincidence frequency of the window pane. The stiffness and/or mass of the window sash, the bracket, and/or the stiffeners coupled to the bracket can also be tuned.