David A HarrisDavid A. Harris is a professional acoustical engineer specializing in architectural and environmental acoustics, product development, and building material research. He is the principal of Building and Acoustic Design Consultants. He is also executiv director and past president of the Noise Control Association, and vice chairman of the applications subcommittee of ASTM E33 on environmental acoustics. He is an IFMA Certified Facility Manager and holds a dozen patents for building products and acoustical systems. Mr. Harris is known throughout the industry for his cutting-edge technologies for soundproofing and acoustically well-designed residences. Read More Read Less