FFT

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FFT

Abbrev. for Fast Fourier Transform. A particularly efficient implementation of the Fourier transform for computers. It is used extensively in aperture synthesis, digital signal processing and image processing.

(mathematics)

FFT

(Fast Fourier Transform) A computer algorithm used in digital signal processing (DSP) to modify, filter and decode digital audio, video and images. FFTs commonly change the time domain into the frequency domain.

FFTs are widely used in voice recognition and myriad other pattern recognition applications. For example, noise-cancelling headphones use FFT to turn unwanted sounds into simple waves so that inverse signals can be generated to cancel them. FFTs are used to sharpen edges and create effects in static images and are widely used to turn a number series into sine waves and graphs.

Fast DFT Processing
The FFT quickly performs a discrete Fourier transform (DFT), which is the practical application of Fourier transforms. Developed by Jean Baptiste Joseph Fourier in the early 19th century, the Fourier equations were invented to transform one complex function into another. One of Fourier's primary goals was to predict the rate of heat transfer based on temperature, mass and proximity. In practice, the terms FFT, DFT and Fourier transform are used synonymously. See DSP.

An FFT Transform A Fourier transform was used to chart the power levels at different frequencies from the half second of digital samples (top).
References in periodicals archive ?
For the case of internal discharge, the existence of kink at the FFT plots is considered.
Table I contains the measurement results of input signal 1000 kHz obtained for different FFT sizes, from 1024 to 8192 samples.
This poor maximum frequency performance occurs frequently when FFT size increases [1922].
The paper continues, "A frequency bin represents the measurement bandwidth of the FFT frequency.
Over the years, the FFT series has covered large parts of safety sciences and related areas.
FFT has been appraised favourably in a number of reviews (e.
But Home Office officials without medical expertise are undermining and distorting reports, FfT say.
In this letter, we propose a novel stable, fast 2D sliding FFT algorithm.
The DSP instructions allow power efficient implementation of FFT operations and various matrix manipulations.
The FFT is intended to allow services to respond quickly to patient concerns, but has faced a backlash from those who feel it lacks a solid evidence base and is confusing for patients.
First Vice President Khurshed Mirzoyev, General Secretary Islom Makhmadshoyev and First Vice President of the Football Federation of Sughd region Hurshed Akdodov will represent the FFT at the Congress," said the statement.
Despite their obvious differences, Lemke and McConico are both firm believers in FFT, and they both believe in it for the same reasons.

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