| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sound reproduction device which reduces noise to the outside while maintaining that a listener can listen to sound by a large volume. <P>SOLUTION: First and second speakers 11Sw1 and 11Sw2 are arranged near both ears of the listener. Other speakers 11FL, 11FR are arranged at positions distant from the first and second speakers to the listener. A sound signal output device part 3 which generates a sound signal to be supplied to the first and second speakers is provided and a sound detection means for detecting presence/absence of sound emitted from the other speakers. In the sound signal output device part, control is performed so that the sound signal to be supplied to the other speakers is supplied to the first and second speakers when it is determined that there is no emitted sound from the other speakers based on detection results of the sound detection means. <P>COPYRIGHT: (C)2007,JPO&INPIT |
