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

論文URL:http://dl.acm.org/citation.cfm?doid=3025453.3025989

論文アブストラクト:We propose a novel method of spatial audio rendering using ultrasound. An ultrasonic phased array generates one or more focal points in air, and they act as point sources of audible sound when the ultrasound waves are modulated. Our sound-point loudspeaker has two major advantages over conventional ultrasound-based sound-beam (superdirectional) loudspeakers. The higher audience selectivity means that our sound-point loudspeaker can deliver sound to the ears of the target person, whereas a sound-beam loudspeaker delivers sound to not only the target person but also other persons standing in the same direction. The other advantage is lower exposure to ultrasound; while an audible sound beam travels along an ultrasonic beam in a soundbeam loudspeaker, audible sound can be heard along the direction perpendicular to the ultrasonic beam in our soundpoint loudspeaker. This paper reports the principles of our sound-point loudspeaker, prototype construction, evaluation, and applications.

日本語のまとめ:

従来の超指向性スピーカは対象者と同じ方向にいる人にも音声が伝わるが,提案手法は超音波フェーズドアレイ制御技術を用いて,対象者だけに音声を伝えることを可能にした.遠隔会議やAR・VRへの応用が考えられている.

(103文字)

発表スライド: