Whisper Wall, Concrete Precast Systems patented sound absorbing noise wall was designed to meet the noise abatement needs of our ever expanding transportation system. Specializing in noise abatement walls for Highway, Railroad, Airport, and mass transit. Whisper wall effectively absorbs unwanted noise and provides an environmental benefit. Recycled rubber tire chips are blended with specialized aggregated and bound together with cement. Over the years this unique manufacturing process has consumed millions of scrap tires. Concrete Precast Systems (CPS) the leader in recycled rubber noise abatement technology licenses its WHISPER WALL manufacturing process throughout the United States and Canada