Bootstrap Business explains how much noise a sound barrier can really block. What to know about barriers blocking sounds on ...

But that’s the case with Penn­DOT’s Highland Park Interchange Project for which locally based, award-winning artist Brian Peters designed unique sound barrier walls. The wavy design is ...

A newly released image shows the sound barrier being broken on February 10 as America’s first civil supersonic jet completed its second flight at speeds exceeding Mach 1. NASA teams on the ...

Despite traveling at a top speed of Mach 1.12, no associated boom was picked up. “XB-1 broke the sound barrier three times during its first supersonic flight – without an audible boom ...

Boom Supersonic's XB-1 has successfully broken the sound barrier, becoming the first supersonic ... "So we've got our litmus test here today, our proof data that we'll use to inform our future ...