Sound Only You Can Hear: Breakthrough in Directional Sound Fields
2025-03-22
Researchers have developed a technology to create 'audible enclaves,' localized sound pockets isolated from their surroundings. This technology uses nonlinear acoustics, generating audible sound by intersecting two ultrasound beams of different frequencies. Ultrasound itself is silent; audible sound is only produced at the intersection. This promises to revolutionize entertainment, communication, and spatial audio experiences, enabling personalized audio in public spaces or creating private conversation zones. While challenges remain, such as nonlinear distortion and power efficiency, this technology represents a fundamental shift in sound control.