Fourier
This routine implements Hankel transforms of integer order based on a Fourier-Bessel series expansion. The algorithm is based on a recently published research work:M. Guizar-Sicairos and J. C. Gutierrez-Vega, Computation of quasi-discrete Hankel transforms of integer order for propagating optical...
Platforms: Matlab
License: Freeware | Size: 92.16 KB | Download (51): Integer order Hankel transform 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 |
From GUI can import arbitrary data or audio signal. Next we can plot them both in time and frequency domain. Also we can visualize the short time Fourier transform of that signal.
Platforms: Matlab
License: Freeware | Size: 1.46 MB | Download (47): Didactic GUI Download |
The programme here draws the plot of the periodic signal whose d-deOaoCkd-de? is given by user.Following data should be entered by user.1. Ck value (separate for k=zero, k= even and k=odd)2. Time period of periodic function3. Resolution4. Range of k (it is actually -inf to +inf) we can only give...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (50): Fourier Series Tool 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 |
In the present program three methods are used to solve a heat conduction problem. This problem is given in M. N. doOCozisik, Heat Conduction, Wiley, New York, 1980. We use pdepe, short times solution based on analytical inversion of a Laplace transform and finally a numerical solution based on...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (51): Use of pdepe and Laplace Transform to Solve Heat Conduction Problems Download |
The inversion of Laplace transforms is performed using two methods: (1) the Zakian method and (2) the Fourier series approximation. Results are in agreement with analytical solutions. The Zakian method presents problems for transcendental functions. The Fourier series gives better results when...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (46): Numerical Inversion of Laplace Transforms Download |
The model simulates asymmetric modulation which can be observed at second scope by zooming the waveform on time axis. In this modulation technique the reference signal is sampled at positive as well as at negative peak of the carrier and held constant between two sampled points. Three phase...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): Sinusoidal Asymmetric PWM modulation based three phase inverter Download |
The model simulates three phase inverter with symmetric PWM modulation in which reference is sampled at the positive peak of the carrier and is held constant till the next positive peak of the carrier appears. The model demonstrates symmetric regular sampling at positive peaks of carrier and...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (49): Sinusoidal Symmetric PWM modulation based three phase inverter Download |
This code implements automatic gain control for audio signals, which attempts to apply a smoothly-varying gain to an audio waveform in order to keep its energy close to some target level. This version also tries to balance the energy in individual frequency bands. It works by taking the...
Platforms: Matlab
License: Freeware | Size: 389.12 KB | Download (49): Time-frequency Automatic Gain Control (AGC) Download |
Basic implementation of the Phase Spectrum Compensation (PSC) [1] method for single channel speech enhancement is included, along with a demo that illustrates its usage.References:[1] A.P. Stark, K.K. Wojcicki, J.G. Lyons and K.K. Paliwal, "Noise driven short time phase spectrum compensation...
Platforms: Matlab
License: Freeware | Size: 1.59 MB | Download (43): Phase Spectrum Compensation Download |
Application for modeling and analysis of stationary noise signals.The method of automatic allocation of non-harmonic periodic components, based on the Fourier expansion, used in this application. GUI in Russian!
Platforms: Matlab
License: Freeware | Size: 2.57 MB | Download (43): Decomposition Signal Tool Download |
GFourier is a plug-in for GIMP; with GFourier, you can use Fourier Analysis, to enhance and recover your images. More specifically, GFourier calculates the Fourier Transform of an image; you can then design and apply some simple filters; later, you can use the Inverse Fourier Transform to...
Platforms: *nix
License: Freeware | Size: 61.44 KB | Download (44): GFourier Download |
Katmus Katmus is an application for manual music transcription. It is based on QT4 and runs under GNU/Linux. Katmus features a score editor synchronized with a wave file, time stretching, audio analysis through the fast Fourier transform (FFT), play scores, export scores to lilypond, pdf, midi...,
Platforms: *nix
License: Freeware | Size: 491.52 KB | Download (41): Katmus Download |
GFFT is generic simple and efficient Fast Fourier Transforms (FFT) implementation using policy-driven design and template metaprogramming. This new implementation of Fast Fourier transforms rose during study of the classical Cooley-Tukey algorithm and from an idea to assume the transform length...
Platforms: *nix
License: Freeware | Size: 51.2 KB | Download (35): GFFT Download |
Advanced hexadecimal editor. Few important programs features: 6 color schemes to interpret bytes visually. Every of them tryies to fit some functionality (for example text analyzing) and user preferences Unlimited undo Access to logical disks under Windows NT/2000/XP Disassembler Import and...
Platforms: Windows
License: Freeware | Size: 485 KB | Download (755): Hexplorer Download |
Displays graphs of algebraic functions in a variety of forms. These include polar and cartesian co-ordinates, parametric and intrinsic functions. A wide range of functions are built-in, from simple trig and hyperbolic functions to things such as the ceil and gamma functions. On-screen HTML help...
Platforms: Windows
License: Freeware | Size: 150 KB | Download (316): Descartes Download |
Advanced image editing, enhancement and analysis software. Easy red-eye removal, noise reduction, automatic brightness, contrast, gamma and saturation adjustment. Resize, rotate, crop and warping. Distance, Fourier and discrete cosine transformation. Reads/writes BMP, ICO, CUR, WMF, EMF, JPEG,...
Platforms: Windows
License: Freeware | Size: 1.2 MB | Download (363): Image Analyzer Download |
PDL::GSL::INTEG is a PDL interface to numerical integration routines in GSL. This is an interface to the numerical integration package present in the GNU Scientific Library, which is an implementation of QUADPACK. Functions are named gslinteg_{algorithm} where {algorithm} is the QUADPACK...
Platforms: *nix
License: Freeware | Size: 2.1 MB | Download (94): PDL::GSL::INTEG Download |
Scorched 3D project is a game based loosely (or actually quite heavily now) on the classic DOS game Scorched Earth "The Mother Of All Games". Scorched 3D adds amongst other new features a 3D island environment and LAN and internet play. Scorched 3D is totally free and is available for both...
Platforms: *nix
License: Freeware | Size: 55 MB | Download (91): Scorched3D 41 Download |