| 摘要 |
PURPOSE:To generate melody sounds matching with the rhythm of a human life of the day by changing the tempo of the melody sounds according to the day, time, etc. when announcement sounds are generated. CONSTITUTION:When the time of 6 o'clock in the morning, etc, is detected in a time counting circuit 3, FF11 is set, while FF15 and 16 are reset. When an alarm setting time in a time alarm circuit 5, etc. is reached under the condition, only FF24 is set through the intermediary of an AND gate 35, while the gate of a sound- length controlling circuit 35 corresponding to FF24 is opened, and the clock of frequency corresponding to a prescribed tempo is counted. And, the counting time to the prescribed counted value corresponding to the length of sound is controlled and the reading-out of a scale code from ROM33 is controlled through the comparison and coincidence with the number of sound length memorized in ROM33. Accordingly, every time when the prescribed alarm time is reached, the melody alarm sound having the tempo in accordance with the morning time feeling is generated. In the same way, the alarm sounds having tempos matching with the feelings of afternoon or night are generated and thus the information in the melody sounds matching with the rhythm of human life of the day is performed. |
