Patent ID: 6504934
Filing Date: 2003-01-07
Classification: H04S

Abstract:
A method for localizing sound image, comprising the steps of:providing a left speaker and a right speaker in front of a listener; subjecting an audio signal to a sound image localization treatment, so as to produce a processed signal; and supplying the processed signal to the left and the right speakers, so as to localize sound image at a predetermined position wherein the method comprises: producing a first processed signal which localizes sound image at a first localization position and a second processed signal which localizes sound image at a second localization position; multiplying one of the first and the second processed signals by a coefficient k which varies in the range of 0 to 1 at random; multiplying the other signal by a coefficient 1âˆ’k; and adding the processed signal multiplied by the coefficient k and the processed signal multiplied by the coefficient 1âˆ’k; wherein, when the predetermined position is located away at an angle &thgr; in a circumferential direction from the front of the listener, the first localization position is in the vicinity of the predetermined position and located away at an angle &thgr;1 in said circumferential direction from the front of the listener wherein &thgr;12 in said circumferential direction from the front of the listener wherein &thgr;2>&thgr;.