简 介： 本文介绍视频 The Fast Fourier Transform (FFT): Most Ingenious Algorithm Ever? 中对快速傅里叶算法（FFT）的分析， 从另外一个角度揭示出FFT快速算法的来源，顺带着把DFT的卷积性质也进行了说明。从这个角度来理解FFT及其背后效率的提高，比较新颖。不过它却隐藏了 ...

简 介： 利用FFT算法实现快速傅里叶变换， 在理论、工程中具有非常广泛的应用。除了能够在合适的计算平台完成FFT算法，同时还需要注意到它在频谱分析中可能带来的频率混叠以及频率泄露等问题。 今天下午的信号与系统， 给同学们介绍了离散傅里叶 ...

This is a preview. Log in through your library . Abstract Apart from the fact that they are both ingenious and remarkably efficient, there would appear to be little kinship between fast Fourier ...

In January, four MIT researchers showed off a replacement for one of the most important algorithms in computer science. Dina Katabi, Haitham Hassanieh, Piotr Indyk, and Eric Price have created a ...

Sparse Fourier Transform (SFT) algorithms constitute a transformative approach to spectral analysis by leveraging the inherent sparsity of signals in the frequency domain. In contrast to the ...

A group of MIT researchers believe they’ve found a way to speed up audio, video, and image compression by improving on the Fourier Transform. They say the new algorithm is up to ten times faster than ...

Researchers have developed a new algorithm that, in a large range of practically important cases, improves on the fast Fourier transform. Under some circumstances, the improvement can be dramatic -- a ...

When James Cooley and John Tukey introduced the Fast Fourier transform in 1965, it revolutionized signal processing and set us on course to an array of technological breakthroughs. But today’s ...

In this paper, we present the modeling benefits of using Lévy processes and the fast Fourier transform (FFT) in the valuation of gas storage assets and, from a practi- tioner’s perspective, in ...