Pattern Matching Fourier Transform

A small but extensible Java based 'embedded lisp'- derives from the 1960 Mc Carthy Lisp a new consequently functional, dynamically scoped dialect enriched by modern features (pattern matching, parallel processing, implicit lex. closures etc).

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.

the stationary signal f(t)=cos(2*pi*5*t)+ cos(2*pi*10*t)+ cos(2*pi*20*t)+ cos(2*pi*50*t)having frequencies of 5,10, 20and 50 Hz at any given time instant.MATLAB program can be implemented to plot the stationary signal mentioned above:Clear...


Platforms: Matlab

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

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

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

This program recognizes ASL input(query) images by comparing it with the database images and outputs the equivalent ASCII representation of it.The details are given inside the zip file on separate explanatory algorithm diagrams and every .m file is documented in detail.Open the 'Readme.txt' in...


Platforms: Matlab

These algorithms are an implementation of the iterative amplitude adapted Fourier Transform method of Schreiber and Schmitz to make surrogate time series. These surrogate time series or fields were made to have the Power spectrum and the amplitude distribution (or PDF) from a measurement, but...


Platforms: Matlab

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

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

PyFFTW: Python bindings to the FFTW3 C-library PyFFTW provieds Python bindings to the FFTW3 "Fastest Fourier Transform in the West." C-library(http://www.fftw.org/) for computing discrete Fourier transforms. It uses numpy and ctypes and includes a somewhat pythonic interface to the FFTW...


Platforms: *nix

The fetchlog utility displays the last new messages of a logfile. It is similar like tail (1) but offers some extra functionality for output formatting and message filtering using extended regular expressions for pattern matching. To show only the new messages appeared since the last call...


Platforms: *nix

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

This article consists of a brief discussion of the energy density over time or frequency that is obtained with the wavelet transform. Also an efficient algorithm is suggested to calculate the continuous transform with the Morlet wavelet. The energy values of the Wavelet transform are compared...


Platforms: Matlab

Search and replace inside databases. Fix garbage data, remove binary characters, change embedded UNC paths coded in your database. DataPipe interactively or automatically search/replaces data in ANY table. You can correct capitalization in people's names (a solution to the old problem),...


Platforms: Windows

This is an old program (1.999) that I have written for understanding radiation patterns of antennas. Basically I was looking for the relationship between interference diagram (Fourier transform of ilumination, usually called Array Factor) and 3D radiation pattern of the Array. For that reason, it...


Platforms: Matlab

[cg, psg] = crandn(rgau,m)Generate correlated Gaussian sequences by Fourier synthesis.Input parameters:rgau = correlation function - length n/2m = number of realisationsOutput:cg = m x n matrix containing m sequences of n correlated variates from a zero mean, unit variance normal distributionpsg...


Platforms: Matlab

The numerical inversion of the Laplace transform is a long standing problem due its implicit ill-posedness. These functions implement one of the more well known numerical inversion algorithms, the Weeks method. Particularly new here is the use of graphics processing unit [GPU] computing to...


Platforms: Matlab

DataLadder announces the release of DataMatch 2009 DataMatch 2009 is a powerful and comprehensive data cleansing, matching, and deduplication DESKTOP tool. Designed to be used by anyone, not just IT professionals, it has an intuitive interface that shows the modifications you are making...


Platforms: Windows

Search and replace inside databases. Fix garbage data, remove binary characters, change embedded UNC paths coded in your database. DataPipe interactively or automatically search/replaces data in ANY table. You can correct capitalization in people's names (a solution to the old problem),...


Platforms: Windows