Posted December 14, 2016 | by Lora Teagarden | in #AREsketches, SPD For linear noises, 2x distance only reduces sound by 3 decibels. #AREsketches Want to see these in a weekly roundup, including the top 3 all performing? Sign up here! via Instagram http://ift.tt/2hnliIi 503 0 0