Researchers at Pennsylvania State University have pioneered a way to transmit sound directly to specific individuals using two beams of inaudible ultrasound that converge to create audible sound. The potential applications for this technology include personalized audio experiences in public spaces such as museums and libraries, navigation instructions for drivers without disrupting passengers, and even enhancing virtual reality experiences. Despite promising results, the technology faces obstacles, including sound quality limitations and distance constraints, indicating that further advancements are necessary to refine the technique.
The researchers fired two independent beams of inaudible ultrasound that, when intersecting, produced sound specifically targeted at a recipient without others hearing.
Mechanical engineer Jiaxin Zhong describes innovative uses, such as delivering personalized audio messages in public spaces while maintaining a quiet environment for others.
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