The algorithm gives an exact solution of a discrete Fourier transform, the “fast” comes from the fact that it use O(n log n) operations instead of O(n²) using a clever divide-and-conquer idea.

Faster-than-fast Fourier transform Date: January 18, 2012 Source: Massachusetts Institute of Technology Summary: Researchers have developed a new algorithm that, in a large range of practically ...

The previous sample, Implementation of Fast Fourier Transform for Image Processing in DirectX 10, implements the UAV technique using pixel shaders.Refer to that sample for more information ...

The principle of the Fourier transform, which dates back to the 19th century, is that any signal, such as a sound recording, can be represented as the sum of a collection of sine and cosine waves ...

The FFT (Fast Fourier Transform) is rightfully regarded as the most important numerical algorithm of our lifetime. Whether it's used to monitor signals coming from the depths of the earth or search ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. COFDM, the modulation method used by most terrestrial DTV standards, depends on implementation of ...

Cooley and Tukey’s Fast Fourier transform (FFT) represented a major breakthrough that paved the way for many of the electronic conveniences we take for granted today. Without the FFT providing an ...

Fast Fourier transforms (FFT) can be used to test the performance of a Beowulf cluster, because they involve substantial communication between nodes. These tests also allow for a comparison of various ...

That's why the Fourier transform is useful for compression. An eight-by-eight block of pixels can be thought of us as a 64-sample signal, and thus as the sum of 64 different frequencies.