“You don’t believe it because it sounds like a speaker, but
no one else can hear it,” says Product Manager Aya Wallwater (not long ago that would have been a serious concern..
)
The SoundBeamer users a 3D sensing module that locates and tracks the user’s ear position. It then sends the audio via ultrasonic waves to create sound pockets enveloping the user’s ear. The sound delivered in this manner can be heard in stereo or spatial 3D audio for the listener.
https://www.digitalmusicnews.com/202...tech-3d-audio/