| 摘要 |
<P>PROBLEM TO BE SOLVED: To clearly tell the difference of a music outputted from a player, ring back tones outputted from a mobile telephone set and call party's voices by hearing while putting a headphone on the head. <P>SOLUTION: The sound image of a music outputted from a music player is localized outside the head of a listener who puts the headphone on his/her head by a signal processing circuit, and the sound image of the call party's voice outputted from a mobile telephone set is localized inside the head of the listener. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
