| 摘要 |
A waveform synthesizing apparatus is provided for producing a desired synthesized waveform by adding partial waveforms together. In this apparatus, the times within a cycle wherein a fundamental and harmonics of a desired wave to be output are stored in the circuitry. Peak values of each partial waveform are formed at the prestored times and output at frequencies, which correspond to or exceed sampling frequencies required by each partial waveform. These partial outputs are fed to low pass filters. Each filter has a cut-off frequency component corresponding to each of the output frequencies to remove therefrom clock components. Outputs of the low-pass filters are added together to obtain a synthesized waveform. |
