| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that battery exhaustion suddenly occurs by use frequencies of an additional function except a normal function when the additional function is added to a hearing aid. <P>SOLUTION: The present invention comprises: a microphone 5; a hearing aid processing part 10; a speaker 4; a battery 20 which supplies power to the microphone, the hearing aid processing part, and the speaker; a voltage measurement part 18 which measures output voltage of the battery; a recording processing part 13 which records a sound signal based on a signal from a recording switch 6; and a reproduction processing part 16 which reproduces the sound signal recorded in the recording processing part based on a signal from a reproduction switch 7. In the case that a voltage measurement result by the voltage measurement part is lower than a first threshold when at least one of the recording switch and the reproduction switch is operated, the reproduction processing part outputs a first warning tone for imparting stop of at least one function of recording and reproduction from the speaker. <P>COPYRIGHT: (C)2012,JPO&INPIT |
