| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately and easily realize sound image displacement accompanying a Doppler effect corresponding to relative displacement when a sound source and a listener perform relative displacement. <P>SOLUTION: When a curve or straight line representing a locus of a displacement point, its speed, movement start time, movement end time and the closest approaching time being time when distance between the displacement point and a predetermined fixed point becomes minimum are set, a sound image displacement processor is provided to calculate the closest approaching position being the position of the displacement point at the closest approaching time, a movement start position and a movement end position on the basis of the set contents, calculate distance between a displacement point at the time between the movement start time and the movement end time, and the fixed point, calculate a speed to the fixed point of the displacement point at the time on the basis of the calculation result, attenuate or delay an inputted sound signal in accordance with the distance and change the pitch of the sound signal on the basis of the speed to output the sound signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
