Sound Control for Buildings. - Wilrep Ltd. Quiet PC. ClarkDietrich Building Systems. Global Rubber Products Ltd. Lowry's. INC. Soundproofing.Org. IAC. Commercial and architectural soundproofing control products, acoustic floor underlayment systems, soundproofing baffles, acoustical screens, curtain enclosures and flooring products. Active Noise Reduction Systems. Soundproofing Materials.