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.
该芯片采用了改进的直接数字频率合成算法、流水线结构与ROM分时复用技术，保证了芯片的高性能和速度，节省了芯片面积。
A modified direct digital frequency synthesis (DDS), pipelined structure, and time-sharing ROM are adopted in the chip, for saving chip area and ensuring high performance and speed.
系统采用计算机控制下的直接数字频率合成(DDS)技术，实现电调谐波长扫描。
Using DDS (Direct Digital Synthesizer) technique under control of single-chip computer, electronic-tunable wavelength scanning is realized.
采用高精度的直接数字频率合成（DDS）和数字锁相环技术，实现了高频率跟踪精度。
DDS and digital phrase-lock technology have been applied in FPGA to improve the accuracy of frequency tracking.
该系统采用了直接数字频率合成技术(DDS)和并发处理技术，提高了系统的性能和处理速度，较大程度地减少了硬件延时。
The system USES direct digital synthesize (DDS) and parallel processing technique, improves the performance and speed of the processing, and reduces the hardware delay mostly.
本设计采用AT89S52单片机，辅以必要的模拟电路，实现了一个基于直接数字频率合成技术（DDS）的正弦信号发生器。
This design construct an sinusoidal signal generator based on DDS(Direct Digital Frequency Synthesis), completed by MCU AT89S52 and necessary analog circuit.
本设计采用AT89S52单片机，辅以必要的模拟电路，实现了一个基于直接数字频率合成技术（DDS）的正弦信号发生器。
This design construct an sinusoidal signal generator based on DDS(Direct Digital Frequency Synthesis), completed by MCU AT89S52 and necessary analog circuit.
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