Study Evaluates Effectiveness of Lightweight Sound Barriers

摘要

Preliminary analysis of a 10-ft sound barrier of transparent acrylic material found an average noise level reduction of 2.4 dBA. "Although the average reductions may seem acoustically small for some locations, they are statistically significant, confirming that the barrier has had a positive effect on noise levels," according to the report by the Center for Transportation Research at the University of Texas at Austin.