| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a remote controller for a water heater that has a user-friendly and hand-free talking function, and can avoid a talking failure caused by such an acoustic defect as howling even when an acoustic coupling value changes suddenly due to an external factor such as the remote controller getting wet. <P>SOLUTION: The remote controller for a water heater is configured to provide a notice of caution concerning the use of a hand-free talking when the acoustic coupling value G, which is an indication of how much sound microphones 2f, 3f pick up from speakers 2e, 3e, deviates from a predetermined range. <P>COPYRIGHT: (C)2012,JPO&INPIT |
