Adaptive Virtual Surround Sound Rendering System for an Arbitrary Listening Position
Sunmin Kim, Donggeon Kong, Seongcheol Jang · Journal of the Audio Engineering Society · 2008
In general a head-related-transfer-function-based virtual sound system inherently generates a sweet spot, and a listener positioned outside the sweet spot cannot feel the surround sound effect well. A novel virtual sound rendering method is presented which allows the listener located at an arbitrary position to obtain a good impression of surround sound by using two-channel loudspeakers only. This smart virtual sound rendering system consists of a listener position tracking system with infrared and ultrasonic sensors, and an adaptive virtualizer algorithm optimized for the listener position. Based on this new method, a TV viewer at an arbitrary position can enjoy good surround sound by the simple push of a button on a remote controller.