Fourier
Fourier Transform Lab Student Edition is an advanced application designed for performing Fourier transformations, which can be useful in teaching Crystallography, since they are related to Optical Transforms (e.g. laser diffraction patterns). Furthermore one may get a quick hands-on experience...
Platforms: Windows
License: Freeware | Size: 6.8 MB | Download (82): Fourier Transform Lab Student Edition Download |
It tries to approximate a f(x) function with a m term Fourier series, using the quad MATLaB function. Requirements: - MATLAB 7.1.0 or higher
Platforms: Windows, Mac, *nix, Matlab, BSD Solaris
License: Freeware | Download (61): Fourier Series Calculator Download |
Finding the Fourier transform of a rectangular pulse..filtering the spectrum and regenerating the signal usingthe filtered spectrum is done...at the end Rayleigh theorem is proved by showing that the energy content of both time domain and frequency domain signals are equal..your comments are...
Platforms: Matlab
License: Freeware | Size: 215.04 KB | Download (41): Fourier Analysis of a Rectangular Pulse Download |
According to shannon theory it is possible to reconstruct a band limited signal from its Fourier components provided it is sampled sufficiently...just to demonstrate this, posting a small example based on that
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (44): Fourier reconstruction of Bandlimited function Download |
These are two M-files d-deDUfourier1d-deDt and d-deDUfourier2d-deDt The first is designed to demonstrate how triangular, rectangular, saw tooth, half wave and full wave rectified signals can be built from superposition of a predefined no of Fourier harmonic terms. It demonstrates how increasing...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (39): Demonstration of Fourier transformation Download |
The Fourier Calculator (Simulink model) can be used for arbitrary signals. In this case the Wolfer sun spot data are analyzed
Platforms: Matlab
License: Freeware | Size: 993.28 KB | Download (39): Wolfer sun spot data analyzed with the Fourier Calculator Download |
With this Fourier Calculator a periodic signal can be analyzed and represented in figures with harmonics.The signals can easily be produced in the model.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (42): Fourier Calculator for periodic signals Download |
This program is open source code of fast Fourier transform in matlab.Where y is the input argument and p is the normalized size of the input. Lety = [1 2 3 4 ];x= length(y);m= log2(x);p= ceil(m);To call the function useft2(y,p);
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (56): Fast Fourier Transform Algorithm Download |
It tries to approximate a f(x) function with a m term Fourier series, using the quad MATLaB function.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (41): Fourier Series Calculator Script Download |
The Fourier sine series model displays the sine series expansion coefficients of an arbitrary function on the interval
Platforms: Mac
License: Freeware | Size: 1.4 MB | Download (38): Fourier Sine Series Model Download |
The Ejs Harmonics and Fourier Series model displays the sum of harmonics via a Fourier series to yield a new wave. The amplitude of each harmonic as well as the phase of that harmonic can be changed via sliders. In addition, several pre-set functions can be chosen to display. You can modify this...
Platforms: Mac
License: Freeware | Size: 1.34 MB | Download (38): Harmonics and Fourier Series Model Download |
This applet incorporates some image processing techniques in the Fourier optics domain. You can compute and see the Fourier transform of an object and the convolution between two images. You can also simulate the Vander Lugt correlator (matched filter, phase-only filter and inverse filter) and...
Platforms: Mac
License: Freeware | Size: 10.24 KB | Download (44): Fourier Optics Download |
An interactive tool to study Fourier Series and related physics phenomenons, using open source/free sorftware.
Platforms: Windows, Mac, Linux
License: Freeware | Size: 1.69 MB | Download (52): fourier Download |
A fourier filter for time-series signals. Version 1.5, May 4, 2007, is calibrated specifically for time-based signals. Does not require the Signal Processing Toolbox. By adjusting the parameters, you can create lowpass, highpass, bandpass, and bandreject (notch) filters with variable cut-off...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (49): Interactive Fourier Filter Download |
Program FFT2SURF plots double Fourier series representations for several different surfaces. The figures show effects of the number of series terms and use of Lanczos sigma factors to smooth Gibbs oscillations. The Fourier series of a doubly periodic function with periods px and py has the...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (43): Double Fourier Series Surface Plotting Download |
GFourier can help you use Fourier Analysis for image restoration. GFourier calculates the Fourier Transform of a given image and allows the use of filters in the frequency domain. The Inverse Fourier Transform is then used to substitute original image.. Get GFourier at SourceForge.net. Fast,...
Platforms: *nix
License: Freeware | Size: 65.54 KB | Download (228): GFourier Download |
This program transforms the images and the sounds using single BIG Fourier Transforms (or DCT/DST,etc.). It produces very interesting and strange effects and allows you to transform sounds to images and vice-versa. To see what it does see the examples .
Platforms: *nix
License: Freeware | Size: 51.2 KB | Download (104): HyperMammut Download |
PDL::FFTW is a PDL interface to the Fastest Fourier Transform in the West v2.x. This is a means to interface PDL with the FFTW library. Its similar to the standard FFT routine but its usually faster and has support for real transforms. It works well for the types of PDLs for which was the...
Platforms: *nix
License: Freeware | Size: 2.1 MB | Download (149): PDL::FFTW Download |
This program calculates the non-destructive zoom Fast Fourier transform of a time history.The input file must be time(sec) and amplitude(units)Reference: Randall, Frequency Analysis, Bruel & Kjaer, page 170.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): zoom FFT Download |
Radix 2 FFT using Decimation in FrequencyTruly Appreciates the Wonder Geniuses Joseph Fourier & Cooley Tuckey
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (44): Radix 2 FFT Decimation In Frequency Download |