Listar Comunicaciones y ponencias de congresos DIEE - IEES Biltzarretako komunikazioak eta txostenak por autor UPNA "Carlosena García, Alfonso"
Mostrando ítems 1-12 de 12
-
Analysis and synthesis of vibrato in lyric singers
Arroabarren Alemán, Ixone
; Carlosena García, Alfonso 
(2002)
Contribución a congreso / Biltzarrerako ekarpena 
In this paper two aspects of the vibrato signal characterisation are presented. First, an analysis method, which breaks down the musical signal into its different partials, and decomposes them into two separate ... -
Computation of greatest common divisor for the blind deconvolution of transient impulsive signals
Lecumberri Villamediana, Pablo; Gómez Fernández, Marisol ; Carlosena García, Alfonso (Universitat Politècnica de Catalunya, 2005)
Contribución a congreso / Biltzarrerako ekarpena
We propose a new blind deconvolution method for transient impulsive signals in a single input – multiple output (SIMO) system. The method exploits the data redundancy inherent to SIMO multichannel systems to obtain an ... -
Design of low-cost smart accelerometers
Carlosena García, Alfonso ; López Martín, Antonio ; Massarotto, Marco ; Cruz Blas, Carlos Aristóteles de la ; Lecumberri Villamediana, Pablo ; Gómez Fernández, Marisol ; Pintor Borobia, Jesús María ; Gárriz Sanz, Sergio (Universitat Politècnica de Catalunya, 2005)
Contribución a congreso / Biltzarrerako ekarpena
The goal of this project is to design a low-cost smart accelerometer, making use of a piezoelectric element as basic sensing material, and adding a mixed-mode conditioning circuit. -
Glottal spectrum based inverse filtering
Arroabarren Alemán, Ixone; Carlosena García, Alfonso (ISCA, 2003)
Contribución a congreso / Biltzarrerako ekarpena
In this paper a new inverse filtering technique for the time-domain estimation of the glottal excitation is presented. This approach uses the DAP modeling for the vocal tract characterization, and a spectral model for the ... -
High-order PLL design with constant phase margin
Ugarte Gil, Mikel; Carlosena García, Alfonso (IEEE, 2010)
Contribución a congreso / Biltzarrerako ekarpena
In this paper we describe a novel procedure to design high-type high-order Phase Locked Loops (PLLs) from lower order prototypes, preserving a prescribed Phase Margin (PM). The method builds on a model recently proposed ... -
Modelling of vibrato production
Arroabarren Alemán, Ixone; Carlosena García, Alfonso (2004)
Contribución a congreso / Biltzarrerako ekarpena
In this paper, a novel Non-Interactive Source-Filter model for singing voice, incorporating vibrato, is proposed. In this way the periodic frequency variation, peculiar to vibrato is included in a simplified signal model ... -
Multichannel blind deconvolution of impulsive signals
Lecumberri Villamediana, Pablo; Gómez Fernández, Marisol ; Carlosena García, Alfonso (2005)
Contribución a congreso / Biltzarrerako ekarpena
In this communication, the problem of blind deconvolution of transient, impulsive signals in a multichannel environment is addressed. This kind of signals arise naturally, or are used as external excitation, in many ... -
A novel design method for phase-locked loops of any order and type
Carlosena García, Alfonso ; Mànuel Lázaro, Antonio (IEEE, 2006)
Contribución a congreso / Biltzarrerako ekarpena
In this paper a novel approach to the design of PLLs is presented, which can be used regardless of their Order and Type. The method stems from the fact that high-frequency poles in the loop filter determine filtering ... -
A novel PLL architecture
Osa, Juan I.; Carlosena García, Alfonso ; López Martín, Antonio (2000)
Contribución a congreso / Biltzarrerako ekarpena
A novel phase-locked loop scheme is proposed in this paper, whose main distinguishing features are infinite hold-in range, pull-out range fractionally constant and also a ripple fractionally constant. To this end, it ... -
Sensing in coin discriminators
Carlosena García, Alfonso ; López Martín, Antonio ; Arizti, Fernando; Martínez de Guereñu, Ane; Pina Insausti, José L.; García Sayés, Miguel (IEEE, 2007)
Contribución a congreso / Biltzarrerako ekarpena
This paper describes the technologies used in coin discriminator devices, stressing the improvements and novel mechanisms introduced by the authors in the past few years as a result of the cooperation with one leading ... -
Two methods for nonparametric spectrum peak discrimination
Zivanovic, Miroslav ; Carlosena García, Alfonso (2002)
Contribución a congreso / Biltzarrerako ekarpena
The conventional DFT-oriented nonparametric interpolation methods, based on time windowing and the DTFT envelope curve resampling (zero padding, Chirp-z [1], frequency scale distortion [2], etc.), can improve the spectrum ... -
Unified analysis of glottal source spectrum
Arroabarren Alemán, Ixone; Zivanovic, Miroslav ; Carlosena García, Alfonso (ISCA, 2003)
Contribución a congreso / Biltzarrerako ekarpena
The spectral study of the glottal excitation has traditionally been based on a single time-domain mathematical model of the signal, and the spectral dependence on its time domain parameters. Opposite to this approach, ...
