Patent ID: 8611186
Filing Date: 2013-12-17
Classification: G01S,H04S

Abstract:
1. An apparatus for localizing a sound image in a target position from which a synthesized sound is directed to a viewing area in front of a display device, the apparatus comprising: a first signal generating unit configured to generate a first acoustic signal; a first speaker provided on the display device and configured to generate a first sound according to the first acoustic signal; an input unit configured to input a localization magnification n; a first control filter unit configured to adjust the first acoustic signal with a first control filter G a second speaker provided on the display device and configured to generate a second sound according to the first adjusted acoustic signal; a second control filter unit configured to adjust the first acoustic signal with a second control filter G a third speaker provided on the display device and configured to generate a third sound according to the second adjusted acoustic signal, wherein the first, second and third sounds are produced as the synthesized sound in the viewing area: N denotes a number of left ear positions which are set along a direction perpendicular to a display panel included in the display device, N also denotes a number of right ear positions which are set in parallel with the left ear positions respectively, W Li denotes a transfer function determined by a linear distance between the first speaker and an i-th left ear position of the left ear positions, W Ri denotes a transfer function determined by a linear distance between the first speaker and an i-th right ear position of the right ear positions, U Li1 denotes a transfer function determined by a linear distance between the second speaker and the i-th left ear position, U Ri1 denotes a transfer function determined by a linear distance between the second speaker and the i-th right ear position, U Li2 denotes a transfer function determined by a linear distance between the third speaker and the i-th left ear position, U Ri2 denotes a transfer function determined by a linear distance between the third speaker and the i-th right ear position, and i is an arbitrary natural number not more than N.