Sound Fighter® Systems enlisted the services of ETS-Lindgren Acoustical Research Lab near Austin, Texas to conduct formal acoustical testing on the company’s new SonaGuard® wide-span noise barrier panels.
The testing met all pertinent ASTM, ANSI, and ISO standards for sound-related performance. Sound Transmission Class (STC) is the single number rating that is calculated from Sound Transmission Loss values to rate the effectiveness of sound barriers at reducing noise intrusion. STC performance varies by frequency, and the testing breaks-down performance accordingly.
“We were very pleased with the results,” says Murray Stacy, VP of Sound Fighter, “An STC of 36 is a significant achievement with a wide-span, lightweight sound wall product, and is above the required performance thresholds for the vast majority of outdoor sound barrier applications.
Research shows that higher STC values provide diminishing benefit with peripheral barrier treatments, so we believe we have reached an ideal combination of acoustic performance and span with the SonaGuard® product.”
SonaGuard® absorptive panels have a maximum span capability of 24 feet, which is one of the widest noise barrier spans available. The panels weigh only 5 lbs per sq/ft, making them lightweight enough for use on weight-sensitive structures like bridges or rooftops.
And the long-term durability of pultruded reinforced fiberglass in harsh outdoor environs is well documented over decades.