Because the behaviors of digital system can be described by register transfer level (RTL) behavior exactly, RTL synthesis becomes the mainstream design method in EDA domain.
由于寄存器传输级(rtl)行为描述可以精确地确定数字系统的操作，所以寄存器传输级综合成为当前EDA行业的主流设计方法。
The technique of speech synthesis is used in the information announcement system of residential quarters, and the voice is transferred by digital signal.
将语音合成技术应用于居住小区信息发布系统，采用数字信号传输语音。
Digital wave synthesis, wave feedback technology, low power distortion.
数字波形合成，波形反馈技术，电源失真度低。
As the behavior of digital system can be fully described by the register transfer level (RTL) behavior descriptor, so RTL synthesis has become the mainstream design method in EDA domain.
寄存器传输级(rtl)综合实现从rtl行为描述到门级结构描述的转换，是目前EDA设计行业的主流设计方法。
The composition and principle of digital synthesis circuit are introduced in detail.
文中详细介绍数字合成电路的组成与工作原理。
Applications of decimal Fraction frequency divider in the area such as direct digital frequency synthesis technology and stepper motor drive speed controller a re introduced.
在此基础上，介绍了小数分频器在直接数字频率合成技术和步进电机驱动速度控制中的两种常见应用。
VHDL, however, can make effective description of the digital system and enable logical synthesis to produce high design density.
VHDL语言能方便地进行数字系统描述，而且能使逻辑综合产生更大的设计密度。
Direct digital synthesis (DDS) is an all digital frequency synthesis technique. Because of its special theory and construction, it has many kinds of modulation capability.
直接数字式频率合成(DDS)技术是一种全数字频率合成技术，其特殊的原理和结构使它具有多种调制能力。
Using hardware digital synthesis method, the signal source generates three phase sinusoidal voltage and current signal.
该信号源中采用硬件数字合成的办法产生三相电压与三相电流信号正弦波。
This paper presents a new weather alarm emitter adapted digital coding and phase-locked frequency synthesis techniques.
本文提出了一种新的气象报警系统，此系统采用数字编码和镇相频率合成技术。
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.
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。
AIM: to compare the performance of two exciting sources based on direct digital synthesis (DDS) technology and to present some advice for the future system design.
目的：比较两种基于直接数字合成技术的阻抗激励源的性能，为以后阻抗系统设计提供指导。
The theory and realization method of digital synthesis two-channel function generator has been researched in the thesis.
本论文对数字合成双路函数发生器的原理及实现方法进行了研究。
In the direct digital synthesis of periodic signals, the frequency resolutions and bands of the synthesized signals are limited by the working frequency and data capacity of the synthesizing system.
在利用直接数字式合成方法产生周期信号时，信号的频率分辨率和带宽直接受限于合成系统的工作频率和存储容量。
The digital pulse width modulator adopts CMOS technology and is suitable for a variety of speech synthesis integrated circuits.
本文所设计的数字脉冲宽度调制器采用CMOS工艺，适合于不同的语音合成集成电路。
This paper introduces the successful application of digital synthesis technique to three phase precision power signal source.
介绍数字合成技术在三相精密功率信号源中成功地应用。
Direct digital synthesis (DDS) is an advanced all digital frequency synthesis technology, based on the PM function of DDS, this paper gives the design scheme of a DDS digital phase shifter.
直接数字式频率合成技术(DDS)是一种先进的全数字频率合成技术，本文基于DDS的相位调制功能，给出了一种DDS数字移相器的设计方案。
This paper introduces the theory of the phase-locked loop (PLL) and the direct digital synthesis (DDS), a method to improve the precision of DDS and reduce its phase truncation error is also given.
介绍了锁相环(PLL)技术和直接数字式频率合成(DDS)技术的基本工作原理，给出了一种提高DDS输出频率精度及减小其相位截断误差的方法。
This paper introduces the design thought of a wide band digital frequency synthesis loop. The principle circuit is given.
介绍了一种宽带数字式频率合成环路的设计思想，给出了原理电路。
Digital look up table method for synthesizing periodic signals is the most popular technique for direct digital frequency synthesis.
数字查表法合成周期信号是一种最常用的直接数字频率合成技术。
According to the technology of direct digital synthesis(DDS), a kind of low frequence signal source was introduced based on the Complex Programmed Logical Device(CPLD)and Single Chip Micyoco(SCM).
介绍了一种应用直接数字频率综合器（DDS）技术，基于可编程逻辑器件（CPLD）和单片机设计的低频信号源。
This paper first presents the fundamentals of DDS, and then gives a method of accomplishing digital synthesis of FM signals by means of dual DDS structures.
本文首先介绍了DDS的基本原理。然后提出用双dds结构实现调频信号数字合成的方法。
The design method of normal frequency standard signal source, which utilizes program control digital wave synthesis technology and achieved by microcontroller was given.
采用程控数字波形合成技术，通过单片微型计算机系统实现了工频标准信号源。
Direct digital synthesis is a kind of advanced technique on frequency synthesis, in this paper, the design and realized technique of DDS is given.
直接数字合成是先进的频率合成技术，给出了直接数字合成器的设计方法和实现技术。
This paper gives the design of electronic phased focused system adopted direct digital synthesis.
本文提出了采用直接数字合成实现电子相控聚焦系统的设计。
The direct digital frequency synthesis (DDS) is a kind of new frequency synthesis method. It has high frequency resolution, fast frequency switching speed, etc.
直接数字频率合成(DDS)是一种新的频率合成方法，具有频率分辨率高、切换速度快等优点。
Method Based on the digital frequency synthesis theory and FPGA, the main part of a multi-frequency signal source is accomplished.
方法：根据数字频率合成理论，基于FPGA实现了多频信号源的核心部分。
The double channel arbitrary wave generator based on direct digital frequency synthesis is introduced.
介绍了基于直接数字频率合成技术的双通道任意波形信号发生器。
The double channel arbitrary wave generator based on direct digital frequency synthesis is introduced.
介绍了基于直接数字频率合成技术的双通道任意波形信号发生器。
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