Sound Projector Targets with Permission

Sound Projector Targets with Permission
A sound projector inspired by a camera’s zoom lens can deliver a localized area of sound to a moving target.

Created by a team from Sussex University, the sound projector relies on acoustic materials smaller than the wavelength of sound. A low-cost face-tracking system controls the acoustic telescope, which uses that information to project a sphere of sound about six centimeters in diameter at the chosen individual. The system also only works on willing participants, helping ensure people would not be subjected to unwanted audio.

Sound Projector Targets with Permission

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