Holographic Whisper - Rendering Audible Sound Spots in Three-Dimensional Space by Focusing Ultrasonic Waves

Explore a groundbreaking 21-minute conference talk from the ACM CHI Conference on Human Factors in Computing Systems that introduces a novel method of spatial audio rendering using ultrasound. Discover how an ultrasonic phased array generates focal points in air, acting as point sources of audible sound through modulated ultrasound waves. Learn about the advantages of this sound-point loudspeaker over conventional ultrasound-based sound-beam loudspeakers, including higher audience selectivity and lower ultrasound exposure. Delve into the principles, prototype construction, evaluation, and potential applications of this innovative technology. Gain insights from researchers Yoichi Ochiai, Takayuki Hoshi, and Ippei Suzuki as they present their findings on creating audible sound spots in three-dimensional space, recorded at the 2017 CHI conference in Denver, Colorado.