Who knew silence could speak so loudly? Carnegie did. It just expanded its Xorel Artform acoustical panel system. Two new 3-D shapes, Diamond and Square, join the original ones, giving interior designers a total of seven shapes, 19 sizes, and more than 300 standard colors to work with. There’s also a new flat shape, Plank. “This provides a truly custom install every time,” president Cliff Goldman says. The tiles can be fabricated in Quiet-Core, a substrate manufactured with 20 percent post-consumer recycled materials, or Mi-Core, a tackable substrate composed of inorganic minerals and fibers.