Now showing items 1-20 of 33

    • A flatness-based generalized optimization approach to spectral estimation 

      Nadeu Camprubí, Climent; Bertran Salvans, Miguel (1990-04)
      Article
      Open Access
      In the optimization formulation, once the known autocorrelations are fixed as constraints, the objective functional completely characterizes the corresponding method of spectral estimation. After observing that this ...
    • An improved maximum likelihood method for power spectral density estimation 

      Lagunas Hernandez, Miguel A.; Gasull Llampallas, Antoni (1984-02)
      Article
      Open Access
    • Análisis de espectrogramas de señales musicales con operadores morfológicos 

      Bustos Manzanet, Laura (Universitat Politècnica de Catalunya, 2020-01)
      Bachelor thesis
      Open Access
      The way an instrument is learned to be played has changed a lot since the rise of the internet, specially the show up of YouTube. High amounts of people learn to play instruments such as the guitar from watching videos and ...
    • Caracterización estacional de la hidrodinámica interior del Puerto de Tarragona 

      Martínez Velasco, Rubén (Universitat Politècnica de Catalunya, 2012-06)
      Minor thesis
      Open Access
      [ANGLÈS] Reducing environmental impact is becoming a major issue in harbours, new environmental regulations are more stringent and harbours must maintain a good image, which does not affect the nearby urban areas and ...
    • Data pre-processing for high-resolution adaptive algorithms 

      Vázquez Grau, Gregorio; Gasull Llampallas, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1988)
      Conference report
      Open Access
      The inclusion of adaptive methods in high-resolution spectral estimation algorithms is considered. The generation of a complete family of spectral estimators from the normalized maximum-likelihood method (MLM) is discussed. ...
    • Data pre-processing for high-resolution adaptive algorithms 

      Vázquez Grau, Gregorio; Gasull Llampallas, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1988)
      Conference report
      Open Access
      The inclusion of adaptive methods in high-resolution spectral estimation algorithms is considered. The generation of a complete family of spectral estimators from the normalized maximum-likelihood method (MLM) is discussed. ...
    • Deep learning architectures applied to wind time series multi-step forecasting 

      Manero Font, Jaume (Universitat Politècnica de Catalunya, 2020-07-14)
      Doctoral thesis
      Open Access
      Forecasting is a critical task for the integration of wind-generated energy into electricity grids. Numerical weather models applied to wind prediction, work with grid sizes too large to reproduce all the local features ...
    • Evaluation of Laplacian diaphragm electromyographic recording in a dynamic inspiratory maneuver 

      Estrada, Luis; Torres Cebrián, Abel; Garcia Casado, Javier; Prats Boluda, Gema; Ye-Lin, Y.; Jané Campos, Raimon (2014)
      Conference report
      Restricted access - publisher's policy
      The analysis of the electromyographic signal of the diaphragm muscle (EMGdi) can provide important information for evaluating the respiratory muscular function. The EMGdi can be recorded using surface Ag/AgCl disc electrodes ...
    • Fir system identification using a linear combination of cumulants 

      Rodríguez Fonollosa, José Adrián; Vidal Manzano, José; Moreno Bilbao, M. Asunción (. IEEE INT. CONF. ON ACOUSTICS, SPEECH & SIGNAL PROC, 1992)
      Conference report
      Open Access
      A general linear approach to identifying the parameters of a moving average (MA) model from the statistics of the output is developed. It is shown that, under some constraints, the impulse response of the system can be ...
    • Focusing wideband arrays from 2-D spectral estimates 

      Lagunas Hernandez, Miguel A.; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1990)
      Conference report
      Open Access
    • Frequency averaging: a useful multiwindow spectral analysis approach 

      Nadeu Camprubí, Climent; Padrell, Jaume; Esquerra Llucià, Ignasi (IEEE IEEE, 1997)
      Conference report
      Open Access
      The multiwindow approach is a meaningful framework for nonparametric spectral estimation. It also encompasses several conventional methods as WOSA and frequency-averaged periodogram. Recently, some authors claimed that the ...
    • Frequency domain analysis and filtering of business and consumer survey expectations 

      Claveria González, Oscar; Monte Moreno, Enrique; Torra Porras, Salvador (Elsevier, 2021-08)
      Article
      Restricted access - publisher's policy
      The main objective of this study is two-fold. First, we aim to detect the underlying existing periodicities in business and consumer survey expectations by means of spectral analysis. We use the Welch method to extract the ...
    • GPR spectra for monitoring asphalt pavements 

      Pedret Rodés, Josep; Martínez Reguero, Adriana Haydée; Pérez Gracia, María de la Vega (Multidisciplinary Digital Publishing Institute (MDPI), 2020-06)
      Article
      Open Access
      Ground Penetrating Radar (GPR) is a prospecting method frequently used in monitoring asphalt pavements, especially as an optimal complement to the defection test that is commonly used for determining the structural condition ...
    • High level spectral-based análisis of power concumption in DSP's systems 

      Calomarde Palomino, Antonio; Mateo Peña, Diego; Rubio Sola, Jose Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2006)
      Conference report
      Restricted access - publisher's policy
      In this paper, an efficient technique to evaluate temporal correlation and transition activity at high level in DSP systems is presented. The method is based on the spectral distribution of signals and has the advantage ...
    • High performance SVD-like procedure for spectral estimation using Rayleigh function estimates 

      Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1998)
      Conference report
      Open Access
      The author describes how Rayleigh estimates can be viewed as a method which performs singular-value decomposition (SVD) procedure without doing it. As a short cut to get principal-component reduction, Rayleigh quotients ...
    • Influence of modifier oxides on spectroscopic features of Nd2O3 doped PbO-Ro2O3-WO3-B2O3 glasses (with Ro2O3 = Sb2O3, Al2O3, and Bi2O3) 

      Prasad, R.N.A.; Venkata Siva, Subbarao Bathula; Neeraja, Katta; Krishna Mohan, N.; Rojas Gregorio, José Ignacio (2020)
      Article
      Restricted access - publisher's policy
      The influence of modifier oxides (Ro2O3 = Sb2O3, Al2O3, and Bi2O3) on the spectral analysis of PbO-Ro2O3-WO3-B2O3 glasses doped with Nd3+ ions is investigated in this work. Samples were prepared by the melt quench method, ...
    • Maximum flatness spectral modeling 

      Nadeu Camprubí, Climent (1990-11)
      Article
      Open Access
    • Novel periodogram and Capon spectral analysis based on nonuniform sampling 

      Font Segura, Josep; Vázquez Grau, Gregorio; Riba Sagarra, Jaume (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
      Conference report
      Restricted access - publisher's policy
      The spectrum analysis problem based on the periodogram and Capon estimates from a nonuniformly sampled signal is addressed. The nonuniform sampling process is cast as a linear projection matrix which encompasses several ...
    • On the cramer-rao bound of finite-length cepstrum spectral estimators 

      Nadeu Camprubí, Climent; Lleida Solano, Eduardo (Institution of Electrical Engineers, 1990-07)
      Article
      Open Access
    • On the stability in phase-lag heat conduction with two temperatures 

      Magaña Nieto, Antonio; Miranville, Alain; Quintanilla de Latorre, Ramón (2018-06-15)
      Article
      Open Access
      We investigate the well-posedness and the stability of the solutions for several Taylor approximations of the phase-lag two-temperature equations.We give conditions on the parameters which guarantee the existence and ...