초록 ▼

A tunable sound absorber including a fibrous batt having a plurality of fibers and a film coupled to the surface of the fibrous batt, where the fibers penetrate the film to create perforations, and where the perforations transfer sound energy to the fibrous batt and the sound energy is absorbed by t

A tunable sound absorber including a fibrous batt having a plurality of fibers and a film coupled to the surface of the fibrous batt, where the fibers penetrate the film to create perforations, and where the perforations transfer sound energy to the fibrous batt and the sound energy is absorbed by the fibrous batt.

대표청구항 ▼

1. A method of tuning the sound attenuation characteristics of a sound absorbing pad during its fabrication, the method comprising the steps of:applying a film to a fibrous batt having a plurality of fibers to form the sound absorbing pad; applying heat to the film; varying the heat applied to the f

1. A method of tuning the sound attenuation characteristics of a sound absorbing pad during its fabrication, the method comprising the steps of:applying a film to a fibrous batt having a plurality of fibers to form the sound absorbing pad; applying heat to the film; varying the heat applied to the film to control the surface porosity of the film; and wherein the porosity provides sound attenuation characteristics which may be tuned to attenuate different sound frequencies.