The University of Penn state have created sound bending technology that lets you listen to music without headphones. Led by Yun Jing have constructed audible enclaves. This allows sound to be perceived in specific locations such as a desk or a specific seat in the car. Using ultrasound transducers with an acoustic metasurface which emits self- bending beams that intersect at a certain point. This creates a privacy barrier between people. Each transducer generates a non linear ultrasonic beam that is a long a curved path. Sounds only becomes audible at the intersection this means anyone standing anywhere else will not hear it.
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Related Stories:
https://www.sciencealert.com/amazing-new-technology-can-bend-sounds-into-your-ears-only
https://interestingengineering.com/innovation/private-listening-without-headphones
https://x.com/IntEngineering/status/1901815821061800124
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