| 摘要 |
PURPOSE:To make constitution of a driving device simple by generating a signal of specified kind from an LSI basing on waveform data for driving a sounding body outputting a waveform memory, thereby changing to the case where a sounding body of other kind is connected and outputting the signal. CONSTITUTION:A waveform memory 9 and a driving signal generating circuit 10 are provided in addition to a basic clock circuit 4 in tha LSI of a sounding body driving device. Waveform data for driving a sounding body of specified kind is digital stored in the memory 9, and the data are added to the circuit 10 by steplike envelope data. The circuit 10 is operated with a coincidence signal from an alarm coincidence circuit 6, and a voltage waveform signal is generated basing on a clock signal from a dividing circuit 3. Waveform signal of the first sounding body 16 and waveform signal of the second sounding body 17 are switched and outputted. The sounding body driving device is constituted of single LSI and sounding bodies of different kind is driven by simple constitution. |
