Nissan unveils new lightweight sound-deadening material for cars
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.
Autoblog
https://www.autoblog.com/amp/2020/01/07/nissan-sound-deadening-material-ces/