Patent ID: 6229899
Filing Date: 2001-05-08
Classification: G10K,H04B,H04R,H04S

Abstract:
A method for providing at least one virtual speaker location around a listener in a room or other at least partial reflective environment with a sound source at a single location, said method comprising the steps of:a) generating a primary audio output by emitting audio compression waves from audio speakers at the sound source which are oriented along a primary audio path directly toward the listener;b) generating secondary audio output from at least one virtual speaker remote from and electronically unconnected with the sound source by emitting ultrasonic sound from at least one parametric speaker positioned at the sound source and oriented toward at least one reflective surface which is remote from the sound source and not along the primary audio path, thereby indirectly generating substantially omni-directional sound from the reflective surface which is perceived as a virtual speaker; andc) synchronizing the primary audio output of the audio speakers with the secondary audio output from the at least one parametric speaker such that the listener hears a unified sound experience from multiple directions.