但由于实际波形中含有大量的谐波分量甚至指数衰减分量，直接影响了这些算法的精度。
Because real waves contain numerous harmonic wave and even exponentially. attenuating components, the accuracy of an algorithm depends on its filterability.
它可以用于直接观察输入信号的电压波形。
Which can be used for direct observation of the input signal voltage waveform.
最终实现频率、相位、复合波形皆可调节的直接数字合成的信号发生器。
The DDS signal generator which can adjust signal phase, signal frequency and complex wave is designed.
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