| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an earphone mechanism provided with one composite sound chamber or over. <P>SOLUTION: Each composite sound chamber is provided with a sub speaker, and sound generated by the sub speaker is uniformly diffused inside the composite sound chamber to form a composite sound field. The composite sound field can be adjusted by moving the sub speaker. For example, revision of the arrangement of the sub speaker or the re-arrangement of the sub speaker directed at a different angle produces the composite sound field. The sound field produced by a main speaker and the composite sound field produced by the sub speaker can form a three-dimensional sound field providing very high sound quality. The sound produced by the earphone has a uniformly diffused sound pressure and a uniform surround effect through the utilization of the physical property by the arrangement of the sub speaker. Thus, a user of the earphone can enjoy the sound field similar to that in a theater. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
