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TIPE 2016–2017 La génération algorithmique de nombres aléatoires : Utilisation à des fins de simulation

A dual energy radiography method using basis decomposition was developed, the process to do it is shown and it is compared against an alternate more direct method of analyzing the data using the logarithm of the original data, concluding that this second method does work but it is not better than basis decomposition.

Case report poster

There are several voice communication systems that are used nowadays which are capable of maintain voice calls between two users in real time. Telephones are widely used all around the world in an unlimited kind of situations. All of these situations expose the microphone (or microphones) of the phones to different and unpredictable noises, as street noise, sea noise, rain noise, wind noise, unwanted voices, car motors, etc. As microphones capture all the sounds around it, including the wanted voice and the unwanted noises, it is necessary to implement digital real time filters capable of attenuate as much as possible all the surrounding noises. It exists a large quantity of noise reduction methods that have been used in the calling algorithms of phones. Even if these methods have had, in general, a good performance, there is still a research being done in this area in order to improve the current results. Because of this, the multichannel methods were created (using multiple microphones) as well as new algorithms that pretend to have a better noise reduction than the single channel methods. Most of these methods require a speech presence probability (SPP) method to achieve the noise reduction. The following document presents a research about different SPP methods as well as a comparison between these. This includes an explanation on how theses algorithm work, a Matlab implementation using real voice and noise recordings and objective tests of the filter.

With Overleaf, edit online instantly this presentation (Internal talk at CU-Boulder) and download a PDF version. This project is also available on my web site

Aula de Apresentação da disciplina de Teoria de Grafos da Universidade Federal de Goiás (UFG), Regional Jataí, semestre 2016.1.

CV

This document explains in detail about the `phys-chem Calculator' to be developed using android. The `phys-chem Calculator' will be a productivity app.

Recommended curriculum developed to suit the specific and strategic aims of doctoral training within the injury epidemiology and prevention research group.