What are the most common noise reduction materials?
Sound insulation panels, sound insulation felt, sound insulation enclosures, soundproof windows, noise doors
Commonly used sound insulation materials include: steel, glass, reinforced concrete, aerated concrete, solid brick, granite, marble, oak, plywood, gypsum board, cement pressure plate, silicon calcium board
As a soundproof material, the general closed-cell structure, the greater the density the better the sound insulation!