| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an acoustic signal comparison apparatus which makes objective comparison possible without having to reproduce acoustic signals. <P>SOLUTION: An acoustic signal comparison apparatus 1 comprises: directivity function generation means 50 which, having the orientation direction of a sound to be compared input thereto as a reference direction, generates a directivity function using the reference direction as the main axis; per-direction acoustic component calculation means 60<SB POS="POST">1</SB>which, based on speaker arrangement information of a first acoustic system, calculates an acoustic component per speaker direction of a first acoustic signal using the directivity function and projects it in the reference direction to calculate a reference direction component in the first acoustic signal; per-direction acoustic component calculation means 60<SB POS="POST">2</SB>which, based on speaker arrangement information of a second acoustic system, calculates an acoustic component per speaker direction of a second acoustic signal using the directivity function and projects it in the reference direction to calculate a reference direction component in the second acoustic signal; and acoustic component differential calculation means 70 which calculates, as a comparison result, a difference between the reference direction components in the respective acoustic signals. <P>COPYRIGHT: (C)2012,JPO&INPIT |
