Binaural Technology for Super Hi-Vision Audio

摘要

Nhk Strl has been researching a 22.2 multichannel sound system for Super Hi-Vision (SHV). This system realizes stereoscopic spatial sound reproduction through the use of numerous loudspeakers placed three-dimensionally around the TV viewing position. To make 22.2 multichannel sound feasible at home, we are also studying binaural technology. Binaural technology allows a listener to perceive sound arriving from an arbitrary direction by simulating the sound propagation characteristics from a sound source to the ears (head-related transfer functions: HRTFs). The technology makes it feasible to reproduce 22.2 multichannel audio using simple devices such as headphones or stereo loudspeakers.