Acoustic panels mainly increase the friction loss of sound waves on their surface and inside through their internal porous structure, special texture, or filling with sound-absorbing materials, converting sound energy into heat energy, thereby absorbing some incident sound waves and reducing sound reflection and reverberation. Polyester fiber sound-absorbing panels are made by hot pressing high-density polyester fibers. Lightweight, environmentally friendly, high sound absorption coefficient, and excellent absorption effect on wideband sound waves. Widely used in professional acoustic environments such as radio stations and recording studios. The tiny pores of foam can absorb sound and reduce echo and noise.