Help the deaf enjoy music

"Most of us assume deaf people can't register sound, ...  A conceptual device from German designer Frederik Podzuweit taps into the deaf's ability to feel music.  Music for Deaf People is a collar that converts auditory input into vibrations, triggering the same sound-processing brain regions in those with full hearing. So instead of listening through your ears, you effectively listen through your skin ... dispatching the vibrations of whatever you're playing--be it Sinatra or Sepultura--to your neck, shoulders, and collarbone. "  http://www.fastcompany.com/1653578/how-a-collar-could-help-deaf-people-hear-music