| 摘要 |
<p>PURPOSE:To decrease the memory capacity even when a sweep frequency is generated, by providing a phase calculating circuit. CONSTITUTION:Signals for one period's share determined with a frequency of a signal to be generated and a clock frequency are stored in a memory 3 in a form corresponding to a time series of sampling. A phase calculating circuit 2 makes operation every time when a clock signal from a clock signal source 1 is inputted, and a data in the memory 3 is read out. Thus, a sinusoidal wave which changes continuously with a constant clock frequency can be generated.</p> |
