| 摘要 |
<P>PROBLEM TO BE SOLVED: To smoothly move a virtual sound source, while decreasing the number of filter coefficients. <P>SOLUTION: A speaker array 10 is constituted by arraying a plurality of speakers SP1 to SPm. An audio signal which is convolved with a designated transfer function is supplied to the speakers SP1 to SPm respectively and wave-front composition of sounds outputted from the speakers SP1 to SPm is carried out. Through the wave front composition, a virtual sound source VSS is formed in an area ABC, including the speaker array 10. At this time, audio signal is so controlled that the virtual sound source VSS is disposed at an intersection of meshes, having unequal intervals which are dense nearby the speaker array 10 and coarse at a distance. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
