Fourier Transform Software

EssentialFTIR 2.0.45 Operant LLC 

EssentialFTIR is a complete program for handling Fourier transform Infrared data. This is a search program for FDM FTIR Reference Spectra Databases, it is easy to use, and it makes complex data manipulations simple. The powerful batch-processing option automates repetitive tasks.

It reads and writes data in industry-standard file . Free download of EssentialFTIR 2.0.45, size 20.46 Mb.


   
 

1D Fast Fourier Transform 6.0 Brown University 

The Fourier transform is a powerful tool allowing us to move back and forth between the spatial and frequency domains. This applet helps students feel comfortable, helping to build a strong intuitive grasp of how signals in one domain correspond to signals in the other.

Students can load scanlines from common image patterns and see . Freeware download of 1D Fast Fourier Transform 6.0, size 25.06 Mb.

2D FFT/iFFT plugin 1.0 KamLex 

User-friendly 2D FFT/iFFT (Fast Fourier transform) plug-in for Adobe PhotoShop compatible plug-in hosts. It uses one of the fastest implementations of the Discrete Fourier transform and has many applications including periodic noise removal and pattern detection. This can be very useful in analyzing fingerprints, paper sieve patterns etc. . Freeware download of 2D FFT/iFFT plugin 1.0, size 399.36 Kb.

AAFFT (Ann Arbor Fast Fourier Transform) 1.0 aafftannarborfa.sourceforge.net 

A Fast Fourier transform (FFT) method for frequency sparse functions. Recovers the k most energetic frequencies hidden in a bandwidth-N function in k*polylog(N) time. . Freeware download of AAFFT (Ann Arbor Fast Fourier Transform) 1.0, size 149.67 Kb.

Voxengo SPAN Plus 1.0 Aleksey Vaneev 

Voxengo SPAN Plus is a handy and reliable VTS plugin designed to analyze audio spectrums in real time via the Fast Fourier transform (FFT method).

Voxengo SPAN Plus is an extended version of Voxengo Span, with enhancements in spectrum display and import / export operations.


. Free download of Voxengo SPAN Plus 1.0, size 0 b.

DSP Test 0.3 Abhir Joshi 

DSP Test is a handy application designed to help you understand the Discrete Fourier transform concept.

The program can calculate and plot the DFT of a random time domain signal, which is drawn by the user. Based on the cutoff frequency, DSP Test automatically generates the reconstructed signal.


. Freeware download of DSP Test 0.3, size 0 b.

AVR FFT LCD 20081031 avrfftlcd.sourceforge.net 

This is a demo of A/D conversion, Fast Fourier transform (by Chan), and displaying the signal and FFT result on LCD (128x64), developed with mega128 and WinAVR-20080610. . Freeware download of AVR FFT LCD 20081031, size 19.34 Kb.

Concept-dsp 32 concept-dsp.sourceforge.net 

This program is intended as an educational tool to explain the concept of Discrete Fourier transform (DFT). It uses the Fast Fourier transform to calculate the DFT of a given arbitrary time domain signal and plots it graphically. . Freeware download of Concept-dsp 32, size 3.74 Mb.

fftw++ 1.09 fftwpp.sourceforge.net 

FFTW++ is a C++ header class for the FFTW Fast Fourier transform library that automates memory allocation, alignment, planning, and wisdom. In 2D and 3D, implicit dealiasing of convolutions substantially reduces memory usage and computation time. . Freeware download of fftw++ 1.09, size 144.30 Kb.

GFourier 0.4.1 gfourier.sourceforge.net 

GFourier is a GIMP plug-in to manipulate images in the frecuency domain, using Fourier transform. . Freeware download of GFourier 0.4.1, size 65.67 Kb.

Guitar Tuner Java Applet 1.1 openstudio.fr 

Online Guitar Tuner java applet which analyse your microphone or any other sound input to find fundamental frequency using a Fast Fourier transform.Classical "Vintage" design looking like real guitar tuners. . Freeware download of Guitar Tuner Java Applet 1.1, size 60.57 Kb.

Soundwave 0.1 soundwav.sourceforge.net 

A visualization of the Fourier transform applied to sound data. Analyzes a time-domain sound sample using the Fourier transform, and graphically displays the results and sound in real time. Attempts to audio into sheet music. . Freeware download of Soundwave 0.1, size 39.20 Kb.

tiny-DSP library 0.1 Tinydsp 

Tiny-DSP library contains c sources of a fast, tiny, portable and generic FFT (Fast Fourier transform) and inverse FFT. Supported are all power of two sizes (like 2,4,8,16,32,...) for one and two dimensional floating point arrays.

tiny-DSP library 0.1 License - Public Domain . Freeware download of tiny-DSP library 0.1, size 2.71 Kb.

Stretched exponential spectrum (KWW) 1.0 apps.jcns.fz-juelich.de 

C routines for numeric computation of sin and cos Fourier transform of the stretched exponential function exp(-t^b), also known as Kohlrausch-Williams-Watts function. Frequently used to describe spectra of disordered systems.

Stretched exponential spectrum (KWW) 1.0 License - GNU General Public License version 2.0 (GPLv2) . Freeware download of Stretched exponential spectrum (KWW) 1.0, size 0 b.

Arbitrarily-Decomposed MPI FFT 1.0 Admpifft 

The Arbitrarily-Decomposed MPI FFT library is a C subroutine library for the computation of the multidimensional Fast Fourier transform (FFT) of a distributed grid using the Message-Passing Interface (MPI).

Arbitrarily-Decomposed MPI FFT 1.0 License - MIT License . Freeware download of Arbitrarily-Decomposed MPI FFT 1.0, size 0 b.

OCaml FFTW 1.0 Ocaml-fftw 

OCaml interface to FFTW3 -- the Fastest Fourier transform in the West! (http://www.fftw.org/). The code is developed at https://github.com/Chris00/fftw-ocaml using bzr.

OCaml FFTW 1.0 License - GNU Library or Lesser General Public License version 2.0 (LGPLv2) . Freeware download of OCaml FFTW 1.0, size 0 b.

FFT Guitar Tuner 1.0 NotMasterYet 

The FFT Guitar Tuner application was developed to be a small tool that's using a Fast Fourier transform to calculate the fundamental frequency of the captured audio sound.

The computer can capture live sound/music using a microphone that is connected to the sound card. Modern sound cards can capture digital signals. A digital signal is a . Free download of FFT Guitar Tuner 1.0, size 10.48 Kb.

DiceChecker 2.0.0.1 DiceLock Security 

FREE DiceLock Security DiceChecker DLL Library.
If in your process or software applications you have need for random number streams and you want to check that the input or output random stream is really at random, you can incorporate DiceChecker library in your applications to be sure that the random streams are at random.
Incorporate . Freeware download of DiceChecker 2.0.0.1, size 1.95 Mb.

DiceCheck 2.0.0.1 DiceLock Security 

FREE DiceLock Security DiceCheck GUI and DLL Library.
If in your process or software applications you have need for random number streams and you want to check that the input or output random stream is really at random, you can incorporate DiceChecker library in your applications to be sure that the random streams are at random.

Spectrum - Spectral Sound Visualizing Effect - V. 1.0 FlashComponents 

Spectrum is a sound visualization effect based on FFT (Fast Fourier transform) analysis. This effect is not exactly a scientific implementation but very useful to give visual feedback of the frequency components in playing sound in realtime. It is available for Flash (Player 9, ActionScript 3) and has very good performance. There are numerous . Free download of Spectrum - Spectral Sound Visualizing Effect - V. 1.0, size 499.71 Kb.


Fourier Transform Web Results

Introduction to the Fourier Transform

Notes on applications to Image Processing.

Fast Fourier Transform

Article in MathWorld.

fftpack

A package of Fortran subprograms for the fast Fourier transform of periodic and other symmetric sequences.

Atmospheric Trace Molecule Spectroscopy Experiment (ATMOS)

ATMOS is an infrared spectrometer (a Fourier transform interferometer) that is designed to study the chemical composition of the atmosphere from space.

Fast Fourier Transform code

By James Van Buskirk.

Jörgs Useful and Ugly FFT page

Code and links in Fortran and C for the Fast Fourier Transform.

Pipelined phase-rotation FFT

By David O'Halloran. The Welchel phase-rotation FFT is a new form of the fast Fourier transform (FFT) that replaces data movement at runtime with equivalent multiplications by precomputed...