DFT的事情拖了很久了,上个学期就一直纠缠着,始终没有理解,去逸夫楼上课每次下课空教室的时候就喜欢一个人“过瘾”,在黑板上写DFT 的表达式,总想着程序实现。大概那样过了一个月,还是没有理解(智商是硬伤),这几天看了stanford的视频,老师挺逗的,感觉好像懂了, 于是重新写DFT。在matlab下实现了 。。。。 个人觉得<The Scientist and Eng
第7章 有限Fourier分析 This past year has seen the birth, or rather the re- birth, of an exciting revolution in computing Fourier transforms. A class of algorithms known as the fast Fourier transform or
第 3 章 Fourier级数的收敛性(Convergence of Fourier Series) The sine and cosine series, by which one can represent an arbitrary function in a given interval, enjoy among other remarkable properties that of
第 2 章 Fourier级数的基本属性(Basic Properties of Fourier Series) Nearly fifty years had passed without any progress on the question of analytic representation of an arbitrary function, when an assertion o
4. Multivariate Fourier decomposition method 4. 多元傅里叶分解法 From (3.6) and (3.12), we observe that the operation that generates the FIBFs is actually the result of the Fourier method based ZPF. This is
Fourier变换中的能量积分及其详细证明过程 在使用Fourier变换分析信号时候,有时需要用到能量积分。本文对Fourier变换的能量积分进行分析。 一、Fourier变换中的能量积分 若 F ( ω ) = F [ f ( t ) ] F(\omega)=\mathscr F[f(t)] F(ω)=F[f(t)],则有 ∫ − ∞ + ∞ [ f ( t ) ] 2 d t = 1