| 摘要 |
<P>PROBLEM TO BE SOLVED: To make a peripheral person determine whether a user wearing a headphone on both ears and listening to music can respond to a conversation from outside. <P>SOLUTION: A display control part 57 in a control body part 11 receives sound signals DML and DMR obtained by analog/digital converting sound signals AML and AMR that the control body part 11 received from a music reproduction device 20L or 20W, from a control part 55. The display control part 57 finds a form of music reproduction by the music reproduction devices 20L and 20W from the sound signals DML and DMR, and controls lighting of LEDs of displays 14L and 14R according to this form. <P>COPYRIGHT: (C)2013,JPO&INPIT |
