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Fast fourier transform(FFT) in C#

 this program provide a class to calculate fast fourier transform (FFT) to compute the discrete fourier transform (DFT) and its inverse....
  Voice        C#     

Short-time fourier transformation (STFT) with Matlab Implementation by Hristo Zhivomirov

The present code is a Matlab function that provides a Short-time fourier transformation (STFT) of a given signal x(n). The algorithm is similar to that of Matlab command “spectrogram”. The result is:  1) stft - a matrix with complex stft coefficients with time across columns and frequency...
  Matlab        Matlab     

fourier transformS

2 Dimensional generic fourier transform % % [ima_out] = fft2(ima_in,direction) % % This function calculates the complex fourier transform % of the input image ima_in. If direction is set to 1, the direct fft % is performed, otherwise, the inverse one performed. % % ima_in : input image. Can...
  Matlab        Matlab     

Serie fourier Onda Cuadrada

REPRESENTACION DE LA SERIE DE fourier PARA UNA ONDA CUADRADA...
  Matlab        Matlab     

Space-time Codes and MIMO Systems

Space-time Codes and MIMO Systems The technical descriptions, procedures, and computer programs in this book have been developed with the greatest of care and they have been useful to the author in a broad range of applications; however, they are provided as is, without warranty of any kind...
  book        Matlab     

TEM320 DSP280x CPU time setting

Texas 儀 DSP CPU time of the DSP280x Setup program, have been in the standard pad 測 試 sometimes! chasing after the normal!!!...
  dsp        C     

Empirical orthogonal function (PCA) estimation for EEG time series

This source contains the empirical orthogonal functional analysis (EOF) calculation for an individual or population of EEG power spectrum multivariate time series. The zip file contains several versions of the code useful for different contexts, including code that returns only the first EOF versus...
  Matlab        Matlab     

IFFT inverse fourier transform algorithm for real series

Inverse discrete fourier transform (IDFT) and its fast algorithms (IFFT) is usually defined on sequences of complex numbers in General and the derivation, In practice, most signals are real signal time-frequency analysis, that is real sequences. Is based on the c language based on bi...
  Algorithm        C     

fast fourier transform serving filter design

Fast fourier transformation is a well-known common method of calculating various practical problems af different kinds. Most commonly it uses calculation complexity reduction by systolic decomposition. The applied sample shows how to design a 60 Hz filter to eliminate the respective freq...
  Algorithm fft        Delphi     

Stockwell transform

Stockwell transfor or also called S transform. and there is a comparison with the short time transform...
  Matlab        Matlab     

timeit function

Unlike own TIC TOC, is used to calculate the stability in MATLAB to run time. Basic principle is to repeat the operation, and then take the average, not because the computer time as a State with a large transformation, efficiency has a lot of useful, basic use timeit (function hundle)....
  Matlab        Matlab     

Joda-time-1.6.2 source code

Date-related algorithms for Java programs, such as adding, the interval, time-sharing was a wide online class private void runDatetime() { System.out.println("Datetime"); System.out.println("======="); System.out.println("Datetime stores a the date and time using millisecs from 1970-01-01T00:0...
  Java Development        Java     

RealtimeChart

JFreeChart to achieve real-time charts, embedded in the tabs Panel, public class TestRealtimeChart{ public static void main(String[] args) { JFrame frame = new JFrame("Test Chart"); RealtimeChartPanel realtimeChart = new RealtimeChartPanel(); JTabbedPane tabPanel = new JTabbedPane();...
  Java Development        Java     

timesten datastore replication

Memory database timesten replication tests, offers 3 types of test scenarios ... ... 。。。。。。。。。。。。。。。。。。 。。。。。。。。。。。。。。。。。。 。。。。。。。。。。。。。。 。。。。。。。。。。。。...
  数据库        Word     

Fast fourier transform

This project is about fast fourier transform.A fast fourier transform (FFT) is an algorithm to compute the discrete fourier transform (DFT) and its inverse. A fourier transform converts time (or space) to frequency and vice versa; an FFT rapidly computes such...
  Java Development        Java     

Calculation of the Fractional fourier transform

The m-file frft.m computes the fast fractional fourier transform following the algorithm of [1] The m-file frft2.m computes the fast fractional fourier transform following the algorithm of [5] (see also [6] for details) The m-file frft22d.m computes a 2D transform based on the 1D routin...
  Matlab        Matlab     

fast fourier transform using verilog

In computer science jargon, we may say they have algorithmic complexity O(N2) and hence is not a very efficient method. If we can't do any better than this then the DFT will not be very useful for the majority of practical DSP applications. However, there are a number of different ' Fast fourier Tra...
  verilog      Verilog     

DFT(Discrete fourier transform)

In mathematics, the discrete fourier transform (DFT) converts a finite list of equally spaced samples of a function into the list of coefficients of a finite combination of complex sinusoids, ordered by their frequencies, that has those same sample values. It can be said to convert the sampled funct...
  Matlab        Matlab     

Scale-invariant feature transform

Scale-invariant feature transform (or SIFT) is an algorithm in computer vision to detect and describe local features in images. The algorithm was published by David Lowe in 1999. Applications include object recognition , robotic mapping and navigation, image stitching , 3D modeling , ge...
  Image Processing        C++     

digital wavelet transform

dwt - digitized/discrete wavelet transform for image feature extraction. is a good feature extraction method for audio and 1 D signal too. uploader do not claim any copyright. download and use it on your own risk. digital wavelet transform or DWT is very similar to its countinuous counterpart namely...
  Matlab        Matlab