| 摘要 |
PURPOSE:To give a warning by use of an optional sound which is stored, by storing an optional sound in a memory, and reproducing a sound when a set time comes. CONSTITUTION:At the time of sound recording, a switch 7 is connected to an R side by a button, etc. 16, and an analog signal inputted from a microphone 6 is converted to a digital signal by an ADC 8, and thereafter, is stored in a memory 10. At the same time, a warning time is set to a time counting device 11 by the button, etc. 16. Thereafter, the switch 7 is connected to a P side. When the warning time comes, a signal is outputted from the time counting device 11, contents of the memory are read out, a read-out digital signal is converted to an analog signal by a DAC14, a high frequency component is attenuated by a low- pass filter 15, a sound is emitted from a loudspeaker 6, and a warning is executed. |
