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Browsing Llibres i capítols de llibres by Author "Solé-Casals, Jordi"

Now showing items 1-9 of 9

Data compression of natural signals based on Discrete Wavelet transform analysis

Reig Bolaño, Ramon; Martí i Puig, Pere; Solé-Casals, Jordi; Parisi Baradad, Vicenç (2009)
Exploring Non-linear Transformations for an Entropybased Voice Activity Detector

Solé-Casals, Jordi; Martí i Puig, Pere; Reig Bolaño, Ramon (2009)

In this paper we explore the use of non-linear transformations in order to improve the performance of an entropy based voice activity detector (VAD). The idea of using a non-linear transformation comes from some previous ...
Improving Early Diagnosis of Alzheimer's Disease Using Synchrony Measures

Gallego Jutglà, Esteve; Solé-Casals, Jordi (IOS Press, 2013)

It is well-known that Alzheimer's disease causes changes on the electroencephalography of the patients. However those changes are difficult to parameterize. In this paper a new ratio between synchrony in 0 and a band ...
Improving Pitch Tracking Performance in Hard Noise Conditions by a Preprocessing Based on Mathematical Morphology

Martí i Puig, Pere; Solé-Casals, Jordi; Reig Bolaño, Ramon (2009)

In this paper we show how a nonlinear preprocessing of speech signal -with high noise- based on morphological filters improves the performance of robust algorithms for pitch tracking (RAPT). This result happens for a ...
On cumulant techniques in speech processing

Zaiats, Vladimir; Solé-Casals, Jordi (2009)

This paper analyzes applications of cumulant analysis in speech processing. A special focus is made on different second-order statistics. A dominant role is played by an integral representation for cumulants by means ...
On the alzheimer’s disease diagnosis: Automatic spontaneous speech analysis

Lopez-de-Ipiña, Karmele; Solé-Casals, Jordi; Alonso, Jesús B.; Travieso, Carlos M.; Ecay-Torres, Miriam; Martinez-Lage, Pablo (Springer, 2014)

Alzheimer’s disease (AD) is the most prevalent form of progressive degenerative dementia and it has a high socio-economic impact in Western countries therefore is one of the most active research areas today. Its diagnosis ...
Online drawings for dementia diagnose: in-air and pressure information analysis

Faundez-Zanuy, Marcos; Sesa Nogueras, Enric; Roure Alcobé, Josep; Garré Olmo, Josep; Lopez-de-Ipiña, Karmele; Solé-Casals, Jordi (Springer, 2014)

In this paper we present experimental results comparing on-line drawings for control population (left and right hand) as well as Alzheimer disease patients. The drawings have been acquired by means of a digitizing tablet, ...
Smoothing FMRI Data Using an Adaptive Wiener Filter

Bartés i Serrallonga, Manel; Serra Grabulosa, Josep M.; Adan, Ana; Falcón, Carles; Bargalló, Núria; Solé-Casals, Jordi (2015)

The analysis of fMRI allows mapping the brain and identifying brain regions activated by a particular task. Prior to the analysis, several steps are carried out to prepare the data. One of these is the spatial smoothing ...
Spontaneous Speech and Emotional Response modeling based on One-class classifier oriented to Alzheimer Disease diagnosis

Lopez-de-Ipiña, Karmele; Alonso, Jesús B.; Barroso, Nora; Solé-Casals, Jordi; Ecay-Torres, Miriam; Martinez-Lage, Pablo; Zelarain, F.; Egiraun, Harkaitz; Travieso, Carlos M. (Springer, 2014)

The purpose of our project is to contribute to earlier diagnosis of AD and better estimates of its severity by using automatic analysis performed through new biomarkers extracted from non-invasive intelligent methods. The ...

Now showing items 1-9 of 9

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Browsing Llibres i capítols de llibres by Author "Solé-Casals, Jordi"

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