| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that a mobile information terminal may be often used in a state held by a listener's hand and inclined back and force from the listener, differences in a distance between two speakers and the listener may be generated, a crosstalk canceling effect can not be obtained, a stereophonic sound field can not be provided, and since crosstalk cancel processing based on head transmission functions corresponding to the inclination of the mobile information terminal requires many head transmission function, a circuit scale may be increased. <P>SOLUTION: Two speakers in an acoustic reproduction system provided with a display screen for displaying an image and two speakers on the same surface and capable of changing an inclination and providing a stereophonic sound field to a listener by performing crosstalk cancel processing are arranged so that a straight line connecting the two speakers is made non-horizontal to the vertical direction of the display screen, a change in the positions of the two speakers corresponding to the inclination is detected by a means for detecting the inclination of an acoustic reproduction system housing, and a delay corresponding to the positional change is inserted into an output signal to the speakers. <P>COPYRIGHT: (C)2008,JPO&INPIT |
