| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide technologies for preventing sound generated by the motion of a user from being masked by other sound. <P>SOLUTION: The user 1 wears a sound reproducer 2 and a volume controller 3 integrated with the sound reproducer 2 on the waist, and practices golf while listening to the sound output from a headphone 4 connected to the volume controller 3. A volume adjusting part 32 of the volume controller 3 adjusts the volume of the sound reproduced during a subsequent downward swing motion, on the basis of an output from an acceleration sensor 34 for detecting the user's turning motion from the top. The user can listen to the impact sound generated when a golf ball is hit. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
