Perforated vs Non-Perforated Acoustic Panels: 5 Proven Facts
Perforated acoustic panels have a face punched with evenly spaced holes, usually 3 mm to 10 mm in diameter, that let sound waves pass through to an absorptive backing (mineral wool, glass wool, or polyester fibre) sitting behind the board. Each hole behaves like a tiny Helmholtz resonator. The air inside oscillates against the air…