Hypersonic sound. This is a focused beam of sound used to deliver marketing noises or other messages in a very personal way. The sound is inaudible unless you walk into its narrow path.
It sounds entertaining.
Yes. It does have fun possibilities....it's sudden and it acts inside your head, as if you're hearing something through headphones..... installing this in soda machines right now on Tokyo's streets. As you walk past, you'll suddenly hear inside your head the sound of the ice cubes dropping into the glass and the soda making that "psst" can-opening noise. You are going to be startled, you won't know where the sound came from and then you'll realise, wow, I was just hijacked by an advertisement.
---> New Scientist, " We hold these freedoms to be self-evident..."
A new project for me...
