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A Beamer presentation with the Universidad Nacional de Colombia theme, modified from the Feather beamer theme.

The official masters and PhD thesis template for UNAL from the library. Retrieved 22 Oct 2014.

Tesis para maestría y doctorado. Tomado de sinab.unal.edu.co.

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.

Presentación para la universidad Nacional, colores oficiales y orientada a ingeniería (datos, algoritmos) por secciones

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Plantilla que usa los colores y fuentes institucionales. Para usar la letra Ancizar Sans se debe usar XeLaTeX o LuaLaTeX como motor de compilación. En la carpeta colors estan las diferentes opciones de fondo para las diapositivas Instrucciones detalladas en los comentarios

Una plantilla Beamer para presentaciones en español de la Universidad Nacional de Colombia. Aunque no es una plantilla oficial, ha sido creada siguiendo las guías de identidad de la Universidad.