Sinusoids

Fast Algorithm estimating the number of sinusoids in a white Gaussian noise. This algorithm use a sub-space method based on chi-square statistics of eigen values of the Autocorrelation Matrix.Example :clear, close all hiddenN = 512;L_vrai = 4;fe = 2000;F = (0:(fe/2)/(N/2-1):(fe/2));snr = [-10 -10... Platforms: Matlab

I have used sum of three sinusoids as my data and this program plots single sided PSD at the end. This is a very simple code made to illustrate the algorithm invloved. Platforms: Matlab

Harminv is a free program and C library for harmonic inversion: decomposing a time-series into a sum of sinusoids, including exponentially decaying sinusoids. Harminv is based on the "filter diagonalization method" (FDM) of Mandelshtam & Taylor, which maps the harmonic inversion problem onto a... Platforms: *nix

This code illustrates Bartlett method for a simple signal (sum of three sinusoids). This code allows user to change to length of each pieces (sub sequence).For example in the code LS is the term which gives length of each piece. Here it is 30 and signal length is 65. So signal will be chopped... Platforms: Matlab

Input data=sum of three sinusoidsAdditive gaussian noise used.At the end, we plot single sided PSD in decibels. Platforms: Matlab

This method allows to use various windows for sidelobe reduction. In this code , this technique is illustrated for a very simple data (sum of three sinusoids). At the end, single sided Power spectral density (PSD) is plotted. Platforms: Matlab

This standalone application (no installation needed) allows you to generate the purest of frequencies using your PC. Volume sliders are available for the six sacred Solfeggio frequencies: UT - 396 Hz - Liberating Guilt and Fear RE - 417 Hz - Undoing Situations and Facilitating Change MI - 528 Hz... Platforms: Windows

This function quickly finds local peaks or valleys (local extrema) in a noisy vector using a user defined magnitude threshold to determine if each peak is significantly larger (or smaller) than the data around it. The problem with the strictly derivative based peak finding algorithms is that if... 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

MATLAB supports Agilent arbitrary waveform generators through the Instrument Control Toolbox.This example demonstrates how you can use MATLAB to develop a GUI application for configuring an Agilent N8241A Arbitrary Waveform Generator. The GUI allows you to configure sinusoids and pulse trains of... Platforms: Matlab

A time-frequency representation which uses a signal-dependent, radially Gaussian kernel that adapts over time. The code provides an excellent ambiguity domain filter for time-frequency analysis.Just run the script main_AOK.m to see it in action. The test signal includes three impulses, two... Platforms: Matlab