| 摘要 |
<p>PURPOSE: To increase sound volume from a state that sound volume is turned down to a preliminarily set sound volume level based on the set sound volume level. CONSTITUTION: An acoustic equipment is made the one showing how to use as an alarm clock. When the rising time of the next morning and the sound volume level to be outputted from a CD player 3 are set before a person goes to bed, the sound volume level is automatically increased up to the sound volume level based on the attenuation factor to be outputted from an attenuator to a motor-driven volume based on the control from a controller 7 and is outputted when this set timer 11 reaches designated time. Therefore, the person can wake up with pleasant feeling.</p> |
