Weighs one-fourth of traditional sound insulation with the same capability
Nissan has developed a new lightweight material for keeping vehicle cabins quiet that it says offers energy-efficiency advantages over more conventional sound-deadening materials. It's demonstrating the technology this week at CES.
Nissan calls it "acoustic meta-material" and says it offers the same sound isolation of road and engine noise — between 500 and 1200 hertz for you sound geeks — as the rubber board commonly used for the job. Yet it weighs just one-quarter as much, Nissan says.