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Perforated aluminum strip ceilings, when paired with acoustic infill materials, offer highly effective sound absorption. Perforation patterns—round, square, or custom shapes—allow sound waves to pass through the aluminum face into backing layers of mineral wool, fiberglass, or foam. The percentage of open area and the thickness of the infill dictate the noise reduction coefficient (NRC), with typical values ranging from 0.6 to 1.0. High NRC systems significantly reduce reverberation time, improve speech intelligibility, and enhance overall acoustic comfort in open-plan offices, auditoriums, restaurants, and educational facilities. The linear arrangement of perforated strips also diffuses sound reflections, breaking up standing waves. Additionally, perforated ceilings maintain the sleek, contemporary aesthetic of solid strip systems while delivering targeted acoustic performance. Customizable patterns and infill options allow designers to balance visual appeal with functional noise control.