Stone Studio

I noticed that there are many people comparing Matlab with Maple, Mathematica etc. to find out what’s the best Maths package for them. But many of them didn’t realize the limitations of Matlab. I put up an article about the Birthday Problem in probability, If you try to solve it analytically like: 11 – factorial(365)/factorial(336)/365^30 [...]

In a group of at least 23 randomly chosen people, there is more than 50% probability that some pair of them will have the same birthday. Such a result is counter-intuitive to many. In probability theory, thi is known as the birthday problem, or birthday paradox. Here is how we calculate this. Solving the Birthday [...]

This paper describes a software package for processing biological signals that has been designed to overcome this by assisting and promoting the sharing of laboratory-developed software. The package, called sigTOOL, has two components: [1] a software development environment designed to facilitate further programming by the end-user and [2] an application implemented through that environment to [...]

The integration of spatial and non-spatial analysis software aims at providing a combination of the most efficient and powerful tools available in both environments (Brenning, 2008). There are various examples where this has been accomplished using access links between different software packages. JGrass, for example, provides integration of the statistic R package into the scripting [...]

FieldTrip is a Matlab software toolbox for MEG and EEG analysis that is being developed at the Donders Institute for Brain, Cognition and Behaviour at the Radboud University Nijmegen, the Netherlands. The FieldTrip toolbox includes algorithms for simple and advanced analysis of MEG and EEG data, such as time-frequency analysis, source reconstruction using dipoles, distributed [...]

EigTool is a free MATLAB package for computing pseudospectra of dense and sparse matrices. It also provides a graphical interface to MATLAB’s built-in eigs routine (ARPACK) for large-scale eigenvalue computations. EigTool was developed from 1999 – 2002 by Thomas G. Wright at the Oxford University Computing Laboratory, under the direction of Nick Trefethen. The software [...]

The aim of the chebfun system is to “feel symbolic but run at the speed of numerics”. More precisely our vision is to achieve for functions what floating-point arithmetic achieves for numbers: rapid computation in which each successive operation is carried out exactly apart from a rounding error that is very small in relative terms [...]

I recommend the following tips for the best possible reproduction of High-quality figures. I divided this article into two parts. The first part is how to produce publication standard figures contains lines. The second part is talking about how to render image files for publications. I normally save these two settings in Matlab so that [...]

COLEA: A software tool for speech analysis PESQ and other objective measures for evaluating quality of speech processed by noise suppression algorithms [composite.zip]             Relevant references: Quality Assessment:   Hu, Y. and Loizou, P. (2008). “Evaluation of objective quality measures for speech enhancement,” IEEE Transactions on Speech and Audio Processing, 16(1), 229-238. Intelligibility Assessment:  Ma, J., [...]

A Simple Example 1234567891011121314clear all; close all; clc; f0 = 10; N = 1024; t = linspace(0,10,N); NFFT = 2^nextpow2(N); fs = 1/(t(2)-t(1)); aa = 0.001:0.002:0.5; L = length(aa); for kk = 1:L     a = aa(kk);     ff = f0 – a*t;     y = cos(2*pi*ff.*t);     periodogram(y,[],NFFT,fs); vline(f0); ylim([-50,2]) [...]