Sampled

Samplify for Matlab allows sampled data users (those capturing real-world samples from A/D converters, or sending samples to D/A converters) to compress these samples in one of three compression modes:a) SignalZIP (TM) lossless mode,b) Samplify fixed-rate mode (users specify the desired...

According to shannon theory it is possible to reconstruct a band limited signal from its Fourier components provided it is sampled sufficiently...just to demonstrate this, posting a small example based on that

This code computes the approximation of the convolution integral (*) between two functions, f(t) and g(t), sampled at the times t1,t2,...,tm (unit spacing), via the trapezoidal quadrature rule. To compute the integral with other than unit spacing, multiply the result by the spacing...


Platforms: Matlab

AutoTune analyses sampled sounds in frequency space to allow you to tune all of your sounds to the same frequency! Just simply enter the note you want to use as the base for all of your sounds, such as C3, and then simply drag your samples onto the application, and voila! Let AutoTune do the...


Platforms: Windows

Libsndfile is a C library for reading and writing files containing sampled sound (such as the Apple/SGI AIFF format and MS Windows WAV) through one standard library interface. The library was written to compile and run on a Linux system but should compile and run on just about any Unix...


Platforms: *nix

Swami - Sampled Waveforms And Musical Instruments - is an advanced instrument editor for MIDI music composition and a sampler frontend. Currently SoundFont® files can be browsed, edited and saved and new instrument formats are being added (DLS and GigaSampler) in the Swami development version....


Platforms: *nix

If Photoshop and Photo Booth were sampled and remixed by the spirit of Bob Moog, the result would be DotMatrix...It works with your G4/G5/Intel Mac! Works great with iSight, but does not require camera - use mobile phone pictures, Photo Booth snaps or pictures from your iPhoto library... Add...


Platforms: Mac

PSPP is a program for statistical analysis of sampled data. It is a Free replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions. The most important of these exceptions are, that there are no 'time bombs'; your copy of PSPP will not 'expire' or...


Platforms: Windows

StrATo (Strain Analysis Tool) loads GE Vingmed heart strain value reports file and performs a statistical peak analysis and curve uniformity evaluation, cutting off sampled noise, plotting results and offering a printout to attach in medical reports.


Platforms: Windows, Mac, Linux

This script uses fact that any probability distributions can be sampled by computing the cumulative distribution, drawing a random number from 0 to 1, and finding the x-value where that number is attained on the cumulative distribution. The searchsorted(..) function performs this search. This...


Platforms: Windows, Mac, *nix, Python, BSD Solaris

This function returns coefficients of Gaussian lowpass filter.Advantages of Gaussian filter: no ringing or overshoot in time domain.Diasadvantage: slow rolloff in frequency domain.Pass SR=sampling rate, fco=cutoff freq, both in Hz, to the function.Coefficients for FIR filter of length L (L always...


Platforms: Matlab

This file improves on the functionality of interp1 and allows the resampling of more complex data. Measurements can be taken completely arbitrarilly and need not be unique.Target uses are for data which is sampled against a signal that may contain noise or where there may be several measurements...


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

Both functions caculate the Lomb normalized periodogram (aka Lomb-Scargle, Gauss-Vanicek or Least-Squares spectrum) of a vector x with coordinates in t, which is essentially a generalization of the DFT for unevenly sampled data.The codes are transcriptions from Fortran of the subroutines found in...


Platforms: Matlab

Sometimes it is important to be able to estimate the peak of a sampled continuous function between the samples. This is called subsample peak interpolation and is used in radar, delay estimation, and communication. Typically one fits a model to the sampled data and then finds the maximum of the...


Platforms: Matlab

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

Some optimization problems have very simple surfaces to optimize. The optimizer simply proceeds downhill to the unique minimizer and returns happily - all is good in the world. Sadly, more often the objective function has multiple local minimizers, you as the user provide poor starting values,...


Platforms: Matlab

This code reads EEG data of specified length from a specified 'bdf' file. It is easier to use than traditional bdf readers and does not output some unnecessary (from author's point of view) information, such as sampling frequency for EACH EEG channel. All EEG channels are assumed as sampled at...


Platforms: Matlab

The main function included in the attached file is called FRAME. The algorithm implemented in this function can be useful in motion analysis (biomechanics, bioengineering).When you know the 3-D position of at least three non-collinear points, you can define a Cartesian reference frame (coordinate...


Platforms: Matlab

A Monte-Carlo simulation meant to calculate the position of micronsized particles in an optical trap (seen as an harmonic potential). It returns the position in meters. Bead radius, corner frequency/ trapping stiffness, sampling frequency and number of sampled points can be varied. It is small...


Platforms: Matlab