Continous Fractional Fourier Transform FrFT by Ashish Soni

The FrFT, which is a generalization of the ordinary Fourier transform. (fractional fourier tr..., signal processing, fourier transform)

Untitled4.m

Get harmoniques of a real signal by Azzi Abdelmalek

Given the signal x(t), the function find a0, ak, bk the amplitudes of cos and sin waves. (harmonics, ak, ck)

[wc,w0,a0,ak,bk,c0,ck]=get_harmonics(y,pas)

get_harmonics_demo.m

One-Sided FFT by Aravazhi Anbarasu

More intuitive than built in function for simple operations.Useful for repetitive code and plotiing. (control design, physics, communications)

fft_calc(X,fs)

Short Time Fourier Transform by Hafeez Dhalla

Script for computing the short time Fourier transform of 1D signals. (short time fourier tr..., fourier transform, fft)

X=stft(x,wl,olr,window,alpha)

P-Stage Wavelet Compression Tool by Brian Moore

Performs P-Stage Wavelet Compression on an input image and compares the fidelity of the i/o images. (wavelets, image compression, signal processing)

PStageWavelets(imageStr,iter,cf,varargin)

WaveletFunctions.m

Biorthogonal Wavelet Compression Tool by Brian Moore

Contains numerous functions to generate biorthogonal wavelets and compress grayscale/color images. (wavelets, biorthogonal wavelets, jpeg)

BWDesignTool(varargin)

BiorthogonalWavelets(imageStr,iter,cf,varargin)

CDFWavelets(l,lt,varargin)

STFT, Short time fourier transform by Suraj Kamya

Short Time Fourier Transform without using inbuilt function. (stft, fourier transform, short time fourier tr...)

X=stfth(x,wl)

STFT, MDCT and inverses. Onset and pitch detection by Antoine Liutkus

Short Time Fourier Transform, MDCT and their inverse. CQT. Onset and Pitch detection. (audio, short time fourier tr..., stft)

Signal

misc

FinancialModelling_Ch2_ImpliedVolatility by Kienitz Wetterau FinModelling

Carr-Madan and Lewis pricing methods using FFT for many advanced financial models (finance, implied volatility, levy)

CallPricingFFT(model,S,K,T,r,d,varargin)

CallPricingFFT2(model,S,K,T,r,d,varargin)

CharacteristicFunctionLib(model,u,lnS,T,r,d,varargin)

Coaxial Cable Based Digital Communication System Simulator by Iftekhar Tanveer

It is a GUI based MATLAB code to simulate a digital communication system. (signal processing, communications, digital signal)

BERCalc(Br,inpt_vol,coding, ...

DigitalTransmissionGUI(varargin)

Sim_EyePat(Br,inpt_vol,coding, ...

Calibrated Spectral Analysis by Edward Zechmann

Simple Fourier Spectral Analysis of sound pressure time record. (spectral analysis, sound, sound pressure)

ACdsgn(Fs)

ArgStruct=parseArgs(args,ArgStruct,varargin)

[Fsn, p, q, errors]=get_p_q2(Fs, Fsu, Fsl)

Geometrical interpretation of the 1-D DFT by Michael Chan

Demonstrates Professor Grigoryan's illustration of geometrical interpretation of the 1-D DFT. (dft, geometry, visualization)

do_Operation1.m

do_Operation2.m

executeMain.m

Back projections and tensor transform by Michael Chan

Illustrates back projections and Professor Grigoryan's tensor transform. (tensor, backprojections, splitting signals)

A=correct_image(A)

B=f_pst(A,p,s);

Err=msr_error(o,out,N1,N2)

Fourier transform demonstration by David Young

An introductory demonstration of the discrete Fourier transform, making use of the fft function. (filtering, fast fourier transfor..., dft)

Introductory Fourier Transform Demonstration

Quick spectral analysis plots by Matthew

Create quick spectral analysis plots. (signal processing, fourier transform, spectral analysis)

spect(data, K, beta, out_form, samp_freq)

Frequency-Domain Integration by Charles Rino

Fourier-Domain integration of a specified function, e.g. frequency versus time to extract phase. (signal processing, fourier transform, demo)

nicefftnum(n)

phase_meas=FrequencyDomainIntegrator(fDop_meas,tt)

FreqDomainIntTest.m

Surrogate time series and fields by V. Venema

Algorithms to calculate 1D, 2D and 3D fields with your specified power spectrum and distribution. (surrogates, iaaft, iterative)

fourier_coeff_isotrop(x)

iaaft_loop_1d(fourierCoeff, sortedValues, initialisationStr...

iaaft_loop_2d(coeff_2d,sorted_values)

Stationary phase approximation for performing Fourier Transforms by Adam Wyatt

Performs a Fourier Transform of a function using the stationary phase approximation (integration, stationary phase appr..., fourier transform)

my_SPA(Aw, phiw, w, t, NP, phiw1, phiw2)

Nonparametric Power Spectrum Estimation With Thresholded Cepstrum by Steve Lutes

A function to nonparametrically estimate the power spectrum via thresholded cepstrum (spectral analysis, power spectrum, cepstrum)

ln(PowerSpectrum(i))', 'Power spectrum is in log to the bas...

Demo.m

Airy Function Generator by Dan Burke

Produces and Airy Pattern (airy function, solid circle, application)

CircSignal(dim,radius,mag,pos)

Waterfall FFT by Tom Irvine

This program calculates the Waterfall FFT of a time history. (waterfall, fft, spectral analysis)

waterfall_FFT.m

Partial Fast Fourier Transform by Gerbrand van der Zouw

Fast computation of part of an FFT using fractional fourier transform (spectral analysis, fourier transform, fractional fourier tr...)

fpft=fastpartialfouriertransform(x,n,m,shift);

Fast Convolution by Stephen McGovern

Convolves two extremely large vectors in reasonable time. (conv, convolution, dft)

[y]=fconv(x, h)

invspecgram by Alfredo Fernandez

Inverse of MATLAB´s specgram. (spectral analysis, invspecgram, specgram)

[data]=invspecgram(B,NFFT,Fs,WINDOW,NOVERLAP);

MyFFT by . Shawn Mikula

Script for generating pretty visualizations based on the Fast Fourier Transform of simple objects. (gallery, fft, visualization)

g=myfft(f)