| 摘要 |
PROBLEM TO BE SOLVED: To provide a DDS signal generation apparatus capable of improving degree of freedom of a maximum phase accumulation value forming a waveform signal for one period. SOLUTION: The DDS signal generation apparatus reads out a trigonometric function from a waveform memory (waveform memory 20), based on a first phase data (phase data X) and a second phase data (phase data Y) respectively obtained corresponding to the accumulation value accumulated by a first adder section (adder section 11) and a second adder section (adder section 12), and generates a waveform signal based on a predetermined waveform operation expression (sin (X+Y)). COPYRIGHT: (C)2007,JPO&INPIT
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