DFT

Short Time DFT Compander and Its Fast Algorithm

短时DFT压扩器及其快速算法

A new implementation of the DFT based on delta modulation ( DM) is proposed.

本文提出一种基于增量调制（DM）序列的离散傅里叶变换（DFT）结构，它不同于基于脉冲编码调制（PCM）的常规方法。

Convolution of windowing function is traditionally used to explain the Discrete Fourier Transform ( DFT ) errors.

离散傅里叶变换 ( DFT ) 的误差一般是通过窗函数的卷积来解释的.

The discrete Fourier transform ( DFT ) and discrete Hartley transform ( DHT ) can be considered as special cases of DYT.

常用的离散傅里叶变换 ( DFT ) 、离散哈特莱变换 ( DHT ) 均可视为DYT的特例.

A new architecture of digital channelized receiver based on sliding DFT is presented.

提出了一种基于滑动DFT的数字信道化接收机的结构设计.

A new implementation of the DFT based on delta modulation ( DM ) is proposed.

本文提出一种基于增量调制(DM) 序列的离散傅里叶变换 ( DFT) 结构,它不同于基于脉冲编码调制(PCM ) 的常规方法.

DFT Study on the Isomerization Reaction of Hydrocyanic Acid and Water

氢氰酸与水的异构化反应密度泛函理论研究

Vibrational Spectra of Thymine Calculated from DFT and Their Comparison with Experimental Results

胸腺嘧啶振动光谱的DFT理论研究及与实验结果的比较

Density Function Theory ( DFT ) based on quantum theory.

基于量子理论的密度泛函理论 ( DFT—DensityFunctionTheory ).

In addition to the WFTA processor, an auxiliary phase shifting network and a signal separator ( or combiner) for two 60-channel supergroups are included in the DFT processor.

在DFT处理器中除WFTA运算器外，还有一个辅助的相移网络和一个供同时处理两个60路超群信号的分离（或组合）单元。

The set of formulas consists of DFT of sampled data, phase difference calculation and frequency calculation.

频率估计公式包括采样序列DFT 、 相位差计算和频率计算.

The bond-breaking reaction of CH-3-X bond is studies by using Density functional theory ( DFT).

用密度泛函理论（DFT）研究CH3X的键断裂电子转移反应。

A DFT Study of Dissociation of Diborane ( B_2H_6) in THF

乙硼烷（B2H6）在醚溶液中分解的理论研究

And the calculations coincide with DFT, PM 3 and so on experiment tally well.

我们的数据表明,用分子力学计算得到的吸附能与实验值,量化计算值都相当接近.

A Precise Real Time Frequency Tracking Algorithm in the Power System Based on the Improved DFT Algorithm

基于改进DFT变换的高精度实时电网频率跟踪算法

Discrete fourier transform ( DFT) was introduced into the spatial domain signal processing to analyse and process the uniformly spaced linear array signals, and a method to extract the DOA of signal was presented.

将离散傅里叶变换（DFT）引入到空域信号处理中，对等距线阵接收的信号进行了分析和处理，提出了一种提取信号来波方向的方法。

Have you tried to run our drive fitness test ( DFT ) utility?

你有试过在这颗硬碟上执行我们的磁碟健康测试 ( DFT ) 软体 吗 ?

DFT Study on Structure and Property for Thioindigo Chromophores

硫靛染料发色体结构与性质的泛函理论研究

Research on Assembling Technology of Collimator based on DFT

基于DFT的光纤准直器装配技术研究

The methodologies of design for testability ( DFT ) are widely realized in the digital circuits test.

可测性设计 ( DFT ) 方法广泛应用于数字电路测试中.通过添加测试硬件,用来降低测试的复杂性.

Some interpolated Discrete Fourier Transform ( DFT ) methods are analyzed.

本文首先讨论并分析了各种插值DFT ( 离散傅里叶变换 ) 算法,然后提出了一种实正弦信号的快速插值频率估计方法.

Goertzel algorithm is a fast algorithm of DFT.

戈泽尔算法是离散傅立叶变换的一种快速算法.

Design-For-Testability, DFT has become a very important part of the CMOS chip and system design.

可测试性设计（Design-For-Testability，DFT）已经成为芯片或系统设计中不可或缺的重要组成部分。

Ab initio DFT/ B3LYP calculations at 6-31G basis set level were carried out for the possible product radicals of attacked thymine by · OH.

采用密度泛函（DFT）理论中B3LYP方法在6&31G基组水平上对胸腺嘧啶（thymine，简写为“T”）受羟基自由基进攻形成的各种可能产物自由基进行几何全优化。

The first step of design for testability ( DFT ) is to determine the testability index.

合理地提出系统测试性指标是测试性设计的首要步骤.

So we can use ab initio method and DFT to describe electronic structure of molecule and atomic group. Using Dewar, Chatt, and Duncanson's ( BCD) model can count out the interaction energy between molecular orbit and metal state.

我们利用从头计算法和密度泛函方法描述分子以及原子团簇的电子结构，采用Dewar，Chatt，和Duncanson（DCD）模型可计算出分子轨道与金属态的相互作用能。

A high-precision internal impedance measurement method of storage battery based on DFT was presented.

基于离散傅里叶变换(DFT),提出一种准确测量蓄电池内部阻抗的方法.

According to time domain sample theory and frequency domain sample theory, the figure changes from time domain to frequency domain were used to illustrate the process of DFT ( Discrete Fourier Transform) and its physical meaning.

根据时域和频域抽样定理，从时域和频域的图形变换角度证明了DFT物理意义，并结合图形推导了其定义式。

Electronic structure and bonding model of TATB are studied by density and discrete variational ( DFT-DVM ) method.

用离散变分密度泛函方法 ( DFT-DVM ) 研究了TATB分子 的电子结构和成键图像.

Development of large capacity active power filter based on DFT detection method

基于DFT谐波检测方法的大容量并联型有源电力滤波器的研制