US Patent 11767648 Sound barrier

A sound barrier includes panels comprising a polymeric material and reinforcing inserts encased within the polymeric material; and a frame comprising posts positioned in spaced, parallel relationship and extending vertically upward, and defining inwardly-facing slots for receiving the panels. The panels are mounted lengthwise with ends within the slots and adjacent panels engage each other by tongues and grooves of lateral surfaces. Methods of making the sound barrier are provided.