取样频率

由于CPLD高速运算的特性，所设计IC的取样频率可以大幅的提升，远超过各式微控器或DSP处理器。

Owing to the high-speed nature of CPLD , the sampling frequency of the constructed IC can be raised up to the range that cannot be reached by the digital controller based on microcontrollers or DSP .

分析了全电视信号PCM编码色度副载波量化噪声，并讨论了量化噪声与取样频率fs和量化比特数n的关系。

This paper analyses colour subcarrier quantization noise in PCM coding of complete television singal . The relationship between quantization noise and sampling frequency ( f s ) as well as quantizing bit number ( n ) is discussed .

取样频率对非均匀取样的DCT变换的影响

Influence of Sampling Rate on Nonuniform Sampling Discrete Cosine Transform

量化的非同步型取样频率变换器原理与应用

Principle and Application of Quantitative Nonsynchronous Sampling Frequency Changer

科学确定取样频率；

Deciding sampling frequency scientifically ;

在脉冲编码调制中，信号频率和取样频率之间的差拍所引起的伪信号。

In pulse code modulation , a spurious signal formed from beats between the signal frequency and the sample frequency .

此资料处理系统包含一个资料接受装置，用来接受以第一个取样频率所取样出的一组资料。

The data processing system includes a data receiving means for receiving a plurality of input data sampled at a first frequency .

减缓取样器下放速度，适当加密取样频率有助于克服其影响。

It is helpful to overcome it by reducing the dropping speed of the sampler , and properly increasing the frequency of sampling .

而与之相对的一种观点则认为，自然取样频率只是引发具有嵌套关系的更为普遍的加工的一种方式。

A contrasting view is that naturally sampled frequencies are but one way to induce a more general process of appreciating nested set relationships .

如果取样频率小于此数，那么输出频率就要产生严重畸变，通常假频指的就是这种情况。

If the sampling frequency is less than this , we can expect a serious distortion of output frequency which is generally referred to as aliasing .

考虑了两种情况：其一是取样频率与彩色副载波频率为非同步的，其二是取样频率为副载波频率的三倍。

One is that the sampling frequency and the color subcarrier frequency are non-synchronized and the other is that the sampling frequency is three times the subcarrier frequency .

频域推进法的基本技术是在递进的取样频率上用迭代法解离散化积分方程，并用基于误差最小化的外推法为迭代法产生初始解。

The basic idea of marching-on-in-frequency method is that the discretized integral equation is solved by using one of the iterative approaches , and the initial estimates are produced by using an extrapolation scheme based on error minimization .

这样一来就就有软点产生，有时，甚至会产生无法预料的严重畸变。如果取样频率小于此数，那么输出频率就要产生严重畸变，通常假频指的就是这种情况。

This produces soft spots , and in some cases , severe unpredicted distor ? tion . If the sampling frequency is less than this , we can expect a serious distortion of output frequency which is generally referred to as aliasing .

在沥青路面质量管理方面，以项目质量管理学为理论基础，提出在路面质量管理、控制中关于取样频率、评定方法、指标体系的新观点。

The new viewpoints have been presented about pavement quality management . Test frequency , quality assessment methods , index system have been studied on the theory basis of quality management . The research of this paper divides into four parts : ( 1 ) .

X频段取样锁相频率合成器&PDRO

An X-band Sampling Phase-locked Synthesizer & PDRO

针对卫星电视接收机中微波高稳定本振源的要求，重点研究了取样锁相频率合成器电路的优化设计及性能。

The optimized design and performance of the circuit of sampling phase-locked frequency synthesizer in microwave high-stability fre-quency-synthesizing technology are researched for the high demand of microwave frequency source .

锁相式频率合成器一般分为数字锁相频率合成器和模拟取样锁相频率合成器两类。

The phase-locked frequency synthesizer can be generally divided into two kinds : one is digital phase locked frequency synthesizer , the other is analog sampling phase locked frequency synthesizer .

梯形取样鉴相频率合成器的混沌现象

Chaotic Phenomena of Ladder & Shaped Sampling Phase Detect Frequency Synthesizer

采用低频校正网络改进取样显示方法频率响应的研究

The improvement of frequency response of the sampling oscillograph by low frequency equalizing network

基于低定量取样的枯水频率分析

Low flow frequency analysis based on LUT sampling

对锯齿形取样鉴相频率合成器中的混沌现象进行了计算机模拟。

This paper gives a computer simulation for chaos phenomena of sampling phase-detection frequency synthesizer .

深入研究了锯齿形取样鉴相频率合成器环的非线性动力学行为；

This paper studies extensively the nonlinear dynamic behavior of the Zigzag Sample Phase Demodulation Frequency Synthesizer .

测得1秒和10秒取样时间的频率稳定度分别为1.5×10~（-10）和4.0×10~（-11）。

The frequency stabilities obtained are 1.5 × 10-10 and 4.0 × 10-11 for an averaging time of 1 s and 10 s respectively .

测量的百秒至万秒取样时间的激光频率稳定度可达到或优于5×10-15，明显地改善了碘稳频532nm光频标的中长期激光频率稳定度。

The laser frequency stability can achieve or be better than 5 × 10 ~ ( - 15 ) for the averaging time from 100 s to 10 ~ 4 s , and the stability of indine-stabilized 532 nm laser frequency in a medium and long term is improved greatly .

取样法测量中频率失真的补偿

Frequency Distortion Compensation in Sampling Measurement

试件应从工地现场取样，测试的频率以中华人民共和国现行标准为准。

Test samples shall be taken on the site and tested at the frequencies specified in the applicable PRC Standards .

在相同条件下，变化取样容积和探头频率均对血流定量有影响。

Under the same condition of experiment , change of sample volume and transducer frequency had influence to quantitative blood flow .

然后在白光光学频谱分析系统中，利用放置在傅里叶频谱面上的取样狭缝得到按频率假彩色编码的频谱图。

The frequency pseudocolor-coded speech spectrogram is then obtained by means of a sampling narrow slit placed at Fourier plane in white-light optical spectrum analyzer .

要定期取样，但是取样频率要根据水的水源和使用情况而定。例如：由私人供应的水取样频率要多于公共供水。

Samples should be taken regularly , but the frequency should depend upon the origin and the usage of the water , e.g.more frequent from private supplies than from public supplies .

余弦型取样脉冲作用下单管取样门的频率特性

Frequency characteristic of single tube sampling gate acted by cosinusoidal model sampling pulse