The present invention relates to an acoustic panel for selectively absorbing acoustic energy. In accordance with the present invention the acoustic panel comprises a first layer having a first surface, and a second surface, the first layer characterized by having a predetermined mass per unit area and a first predet...
The present invention relates to an acoustic panel for selectively absorbing acoustic energy. In accordance with the present invention the acoustic panel comprises a first layer having a first surface, and a second surface, the first layer characterized by having a predetermined mass per unit area and a first predet...