DFT在诸多多领域中有着重要应用，下面仅是颉取的几个例子。 需要指出的是，所有DFT的实际应用都依赖于计算离散傅里叶变换及其逆变换的快速算法，即 快速傅里叶变换。

6 days ago · DFT（离散傅里叶变换）将时域信号转换为频域表示，通过复指数展开实现信号与正弦/余弦基函数的内积运算。FFT算法大幅提升 ...

这三条规律引出了DFT的一个重要性质：共轭对称性，即X (m)=X* (N-m)。 由于DFT的共轭对称性，因此DFT结果中的后N/2-1个元素是冗余的，因此我们也可以说DFT的输出是N/2+1个虚数。

离散傅里叶变换（Discrete Fourier Transform，DFT）傅里叶分析方法是信号分析的最基本方法，傅里叶变换是傅里叶分析的核心，通过它把信号从时间域变换到频率域，进而研究信号的频谱结构和变化规 …

Example (DFT Resolution): Two complex exponentials with two close frequencies F1 = 10 Hz and F2 = 12 Hz sampled with the sampling interval T = 0.02 seconds. Consider various data lengths N = 10, …

The discrete Fourier transform (DFT) is a method for converting a sequence of ...

The DFT is also used to efficiently solve partial differential equations, and to perform other operations such as convolutions or multiplying large integers. Since the DFT deals with a finite amount of data, it …

Learn how the Discrete Fourier Transform (DFT) and its inverse are defined. Discover how they can be written in matrix form.

可测性设计（DFT）给整个测试领域开拓了一条切实可行的途径，目前国际上大中型IC设计公司基本上都采用了可测性设计的设计流程，DFT已经成为芯片设计的关键环节。

The convolution property of the DFT is somewhat di erent from the convolution property for the continuous-time Fourier transform, so it deserves special attention.