Patent ID: 7440578
Filing Date: 2008-10-21
Classification: A47C,B60N,B60R,G10K,H04R,H04S

Abstract:
1. A three dimensional sound field reproducing unit comprising: a three dimensional sound field reproducing device for reproducing a three dimensional sound field; a plurality of listener sections, each section being occupied by a listener; a plurality of speakers, each speaker utilized by a single listener section, and wherein at least three or more of said plurality of speakers are disposed around a left external ear of each of said listener and at least three or more of said plurality of speakers are disposed around a right external ear of each of the listener so as to generate sound waves forming a three dimensional sound field reproducing space in a region inclusive of left and right external ears of each of the listeners; wherein said plurality of speakers are disposed in headrests of seats in the plurality of listening sections and wherein the plurality of speakers include at least three speakers being arranged in a vertical direction in a Y-Z plane near the left external ear and at least three speakers being arranged in a vertical direction in the Y-Z plane near the right external ear, wherein surfaces of the headrests are situated in the Y-Z plane; a switching unit for selecting one sound source from a plurality of sound sources; and a three dimensional signal processing unit for converting an output signal from a sound source selected by said switching unit into a three dimensional sound field signal for supplying it to each of said plurality of speakers.