方案二：采用直接数字频率合成（DDS，Direct Digital FrequenSynthesizer）技术。DDS 技术是根据奈奎斯特（Nyquist）抽样定律及数字处理技术，把事先对模拟周期信号抽样得...
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采用直接数字频率合成(DDS)技术，实现波形发生器。
It also presents the realization of wave form generation with DDS technology.
频综源采用直接数字频率合成(DDS)加倍频、混频方案。
The scheme adopted in the source is Direct Digital frequency Synthesis by frequency doubling and mixing.
本文介绍了一种基于CPLD的直接数字频率合成（DDFS）的实现方法，详细阐述了采用此技术设计多功能信号发生器的方法。
This paper introduces a design of Direct Digital Frequency Synthesis(DDFS) based on CPLD, and describes clearly the design method of a multi-function waveform generator using DDFS.
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