Discrete Fourier Transform
DFT transforms one function into another, which is called the frequency domain representation, or simply the DFT, of the original function (which is often a function in the time domain). But the DFT requires an input function that is discrete and whose non-zero values have a limited (finite)...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (42): Discrete Fourier Transform of a finite sequence Download |
The Fourier transform takes a signal in the time domain and maps it, without loss of information, into the frequency domain. The frequency domain representation is exactly the same signal, in a different form. The inverse Fourier transform(IDFT) maps the signal back from the frequency domain into...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (55): Inverse Discrete Fourier Transform of a finite sequence Download |
This demonstration is intended for people who know something about the theory of the discrete Fourier transform, and who would find it helpful to see some its properties demonstrated graphically, using a programming language.The demonstration shows the form of the Fourier components of a signal...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 788.48 KB | Download (47): Fourier transform demonstration Download |
six different DCT (Discrete Cosine Transform based image fusion techniques are presentedImage fusion using DCT based demo programme is presented.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 153.6 KB | Download (47): Discrete Cosine Transform based Image Fusion Techniques Download |
computes the sequency-ordered discrete Hadamard transform
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (46): sequency-ordered discrete Hadamard transform 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 |
computes the naturally-ordered discrete Hadamard transform
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): naturally-ordered discrete Hadamard transform algorithm Download |
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 |
VB Super Fast Fourier Transform ActiveX dll source code. Perform speed optimized DFT and IFT.
Platforms: Windows
License: Commercial | Cost: $10.00 USD | Size: 10 KB | Download (528): VB Fast Fourier Transform source code Download |
Implementation of Fast Fourier Transform based Homogenization for heterogeneous materials dealing with electric or heat conductiviy. It takes the values of conductivity at regular grid of periodic unit cell that represents the material and produces the distribution of local fields such as...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 399.36 KB | Download (40): Fast Fourier Transform based Homogenization Download |
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...
Platforms: Windows
License: Demo | Cost: $0.00 USD | Size: 1.96 MB | Download (117): DiceChecker Download |
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...
Platforms: Windows
License: Demo | Cost: $0.00 USD | Size: 2.82 MB | Download (125): DiceCheck Download |
NumXL is a Microsoft Excel add-in for econometrics and data analysis, designed to make finance modeling and time series easier to manage. You can perform all of your data work right in Excel. NumXL allows you to apply advanced econometric analysis quickly and easily via an intuitive user...
Platforms: Windows, Windows 8, Windows 7, Windows Server
License: Shareware | Cost: $625.00 USD | Size: 609 KB | Download (774): NumXL Download |
FREE DiceLock Security libDiceChecker-x .so shared 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-x library in your applications to be...
Platforms: *nix
License: Demo | Cost: $0.00 USD | Size: 61.28 KB | Download (92): DiceChecker-x Download |
NIST benchmark for random stream checking. Includes source and object code. Visual C++ 2008 project paramaters included. Implemets the following tests: Approximate Entropy, Block Frequency, Cumulative Sums, Discrete Fourier Transform, Linear Complexity, Longest Run Of Ones, Rank, Overlapping...
Platforms: Windows
License: Freeware | Size: 236 KB | Download (49): NIST-RandomTests Download |
EDFT (Extended Discrete Fourier Transform) algorithm produces N-point DFT of sequence X where N is greater than the length of input data. Unlike the Fast Fourier Transform (FFT), where unknown readings outside of X are zero-padded, the EDFT algorithm for calculation of the DFT using only...
Platforms: Matlab
License: Freeware | Size: 235.52 KB | Download (42): Extended DFT Download |
Compute the discrete Fourier transform at specified frequencies, not using fft.Why one may need this?(1) MATLAB fft function computes the amplitude of signals only (no phase).(2) Once having the recorded time-series data, one often uses fft to do the spectral analysis. However, the frequency set...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (43): DFT on a specified frequency Download |
Run this program with a small image of about 100x100 pixels its because though it works on image of any size but for large images the execution time is very high. So if you do not want to wait for a very long time use a small image.
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (44): discrete fourier transform 2D 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 |