One of the most common digital-signal-processing techniques is the discrete Fourier transform (DFT), which breaks a signal into its component frequencies and can be represented as a matrix.
最常见的数字信号处理技术之一是离散傅立叶变换（DFT），它把一个信号分解成它的组成频率，并表示成一个矩阵。
What follows is a case study of an actual application - a discrete Fourier transform (DFT) - showing the performance improvements that result when compiling with various compiler options.
接下来的部分是一个实际程序的范例—一个离散的Fourier转变(DFT)—显示了在汇编不同汇编器选项时的改善结果。
Particularly fierce arguments are raging around the Department for Transport (DfT), which must make cuts of 25% or more in its budget.
异常激烈的争论围绕着英国交通部（DfT）进行，因为它必须砍掉25%预算或更甚。
Appendix 1 - Fortran DFT source program.
附录1—FortranDF t源程序。
Here is the Fortran driver program that was used to time the DFT codes.
下面是一个用于计时dft代码的Fortran驱动器程序。
Appendix 1 shows the Fortran DFT source program.
附录1显示了FortranDF t源程序。
After a bandpass filter, QDPSK signal's symbol can be divided into steady section and transition section, so the demodulation and synchronization for the signal can be realized with DFT.
经过限带滤波后的QDPS K信号的码元波形可分为稳定区与过渡区，根据这一特点可以利用DFT方法来实现信号的解调和位同步。
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
本文采用基于傅立叶变换(DFT)的频谱分析方法，计算流量信号的频率和相位差。
If the DFT is reduced to less than specified, the area shall be abraded as described above and an additional layer of coating shall be applied until sufficient thickness is achieved.
如果干膜厚度缩减到低于指定时，该区域按照之前描述的进行研磨，并应再涂敷额外的一层保护层直到达到足够厚度。
The Discrete Fourier Transform (DFT) plays an important role in digital signal processing and many other fields.
离散傅里叶变换（DFT）在数字信号处理等许多领域中起着重要作用。
In general though, linear scaling DFT is still quite rare and DFT calculations on a routine basis typically involve a few hundreds or thousands of atoms.
通常情况下，线性缩放密度泛函理论的应用还是很少的，而密度泛函理论只能计算成百、成千的原子电子结构。
By the computer simulation and the synchronization algorithm calculation, the result of DFT analysis show that the new algorithm is capable for reducing the leakage.
仿真结果表明该算法使频谱泄漏大大小于未同步化方法，具有良好性能、计算量小、适合于实时测量应用的特点。
The MPs also said that the DfT failed to seek stricter emissions limits in new tests that will include real-world driving.
埃尔曼表示说，运输部没有在包括真实驾驶的新测试中采取更加严格的排放限制标准。
The paper presents a method of motion curve frequency domain filtering in Omni-directional M-mode echocardiography images based on Discrete Fourier Transform (DFT).
介绍一种基于离散傅里叶变换(DFT)的全方向M型超声心动图运动曲线频域滤波技术。
The analyzing time t has a large effect on the DFT analysis: increasing time t reduces the lobe errors, but may not reduce the leakage errors.
分析时间长度T对DFT分析的误差有影响：增加t可以消减旁瓣误差，但是不能消减泄露误差。
Thirdly the result show that the new algorithm is capable of reducing 50% of the leakage effect in DFT analysis.
验结果表明，补偿算法与未补偿的分析算法相比，频谱泄漏改善50%。
Fast Fourier transformation is an effective, practical DFT algorithm.
快速傅立叶变换是一种有效、实用的信号DFT算法。
A method for processing unequally spaced samples, derived from conventional DFT, is presented.
本文根据通常的DFT处理，研究出一种适用于不等间隔采样信号处理的方法。
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。
The frequency resolution is an important concept in the digital signal processing teaching, because it effects the DFT parameter choice.
频率分辨率是数字信号处理课程教学中一个重要的概念，因为它决定了DFT参数的选择。
In this paper, a knowledge-based design for testability (DFT), is presented.
本文提出了一种基于知识的可测试性设计(DFT)方法。
Analyzing inverse DFT, we obtained a system of linear equations, whose solution can be taken as the spectrum of the data series.
通过对离散傅立叶逆变换的分析，我们得到一个线性方程组，它的解可以作为序列的谱。
In the field of signal analysis, the DFT (Discrete Fourier Transform) is a well known term.
在信号分析领域，DFT(离散傅立叶变换)是一个常见术语。
A novel design method for the prototype filters of a Near Perfect Reconstruction (NPR) Discrete Fourier Transform (DFT) modulated filter bank is proposed.
提出了一种新的近似完全重构(npr)离散傅立叶变换(DFT)调制滤波器组的原型滤波器设计方法。
To estimate signal frequency and amplitude exactly under noisy circumstances, the excellent property of all-phase DFT restraining spectral leakage is mathematically proved.
为精确估计噪声环境中的信号频率和幅值，数学证明了全相位DFT优良的抑制频谱泄漏的性质。
Application DFT Discrete Fourier Transform, right through MATLAB continuous signal spectrum analysis, in order to meet the theoretical analysis and practical needs.
应用离散傅里叶变换dft，通过MATLAB实现对连续信号频谱分析，以满足理论分析和工程实际的需要。
With the rapid development of computer technology, Density Functional Theory (DFT) is widely used to research the molecule's structure and properties day by day.
随着电子计算机技术的飞速发展，密度泛涵理论(DFT)方法在研究分子的结构与性能方面的应用日益广泛。
A prime factor DFT Algorithm for 840 Complex data is presented in this paper.
本文推导了840点素因数分解的离散傅里叶交换的算法。
To get a sense of what the DFT does, consider an MP3 player plugged into a loudspeaker.
我们以一个接有喇叭的mp3播放器为例来大体了解一下DFT是什么。
To get a sense of what the DFT does, consider an MP3 player plugged into a loudspeaker.
我们以一个接有喇叭的mp3播放器为例来大体了解一下DFT是什么。
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