Ara es mostren els items 1-14 de 14

    • A spectral estimator of vocal jitter 

      Mas Soro, Pol (Universitat Politècnica de Catalunya, 2011-09-09)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Université libre de Bruxelles
      English: The purpose of this thesis is to study and implement a spectral method for short-time jitter estimation. Jitter consists in rapid perturbations of the vocal cycle lengths, which can be observed from one cycle to ...
    • Analysis of body bias and RTN-induced frequency shift of low voltage ring oscillators in FDSOI technology 

      Barajas Ojeda, Enrique; Aragonès Cervera, Xavier; Mateo Peña, Diego; Moll Echeto, Francisco de Borja; Rubio Sola, Jose Antonio; Martin Martínez, Javier; Rodríguez Martínez, Rosana; Porti Pujal, Marc; Nafría Maqueda, Montserrat; Castro López, Rafael; Roca Moreno, Elisenda; Fernandez, Francisco V. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Electronic circuits powered at ultra low voltages (500 mV and below) are desirable for their low energy and power consumption. However, RTN (Random Telegraph Noise)-induced threshold voltage variations become very significant ...
    • Correcting image blurring induced by the ADCS jitter in cubesats 

      Llaveria Godoy, David; Camps Carmona, Adriano José; Hyuk, Park (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Attitude determination and control systems (ADCS) are critical in many satellite missions, especially when high pointing accuracy is needed, such as in optical imagers. Current actuators used to control the platform's ...
    • Correcting the ADCS jitter induced blurring in small satellite imagery 

      Llaveria Godoy, David; Camps Carmona, Adriano José; Hyuk, Park (2020-09)
      Article
      Accés obert
      Earth Observation missions have increasingly demanding requirements, i.e., higher spatial resolutions and SNR, and lower revisit times, etc. High-resolution images have to be captured with precise pointing accuracy which ...
    • DLL's behavioral modeling for power consumption and jitter fast optimization 

      Barajas Ojeda, Enrique; Mateo Peña, Diego; González Jiménez, José Luis (2010)
      Text en actes de congrés
      Accés obert
      This paper analyzes the sources of jitter in a DLL and presents a behavioral model for fast DLL optimization. An algorithm to simulate the DLL in open loop is demonstrated. This procedure, together with the behavioral ...
    • Dynamic software randomisation: Lessons learnec from an aerospace case study 

      Cros, Fabrice; Kosmidis, Leonidas; Wartel, Franck; Morales, David; Abella Ferrer, Jaume; Broster, Ian; Cazorla, Francisco J. (2017-05-15)
      Comunicació de congrés
      Accés obert
      Timing Validation and Verification (V&V) is an important step in real-time system design, in which a system's timing behaviour is assessed via Worst Case Execution Time (WCET) estimation and scheduling analysis. For WCET ...
    • Fusing prosodic and acoustic information for speaker recognition 

      Farrús Cabeceran, Mireia (Universitat Politècnica de Catalunya, 2008-10-29)
      Tesi
      Accés obert
      El reconeixement automàtic del locutor és la utilització d’una màquina per identificar un individu a partir de d’un missatge parlat. Recentment, aquesta tecnologia ha experimentat un increment en l’ús de diverses aplicacions ...
    • Geometric corrections of artifacts induced by the attitude control actuators in CubeSats 

      Llaveria Godoy, David (Universitat Politècnica de Catalunya, 2019-10)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      Attitude determination and control systems (AOCS) are an essential element for satellites, especially in remote sensing missions. However, current actuators used to control the platform attitude, as reaction wheels or ...
    • High definition transport stream 

      Cabezas Martínez, Carlos (Universitat Politècnica de Catalunya, 2007)
      Projecte/Treball Final de Carrera
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Fundació i2cat
      El objetivo de este proyecto es estabilizar una plataforma capaz de proveer un entorno de videoconferencia de alta calidad sobre redes IP, usando el software de UltraGrid, el cual está en estado de pruebas . En el ...
    • Jitter and Shimmer measurements for speaker diarization 

      Zewoudie, Abraham Woubie; Luque, Jordi; Hernando Pericás, Francisco Javier (2014)
      Text en actes de congrés
      Accés obert
      Jitter and shimmer voice quality features have been successfully used to characterize speaker voice traits and detect voice pathologies. Jitter and shimmer measure variations in the fundamental frequency and amplitude ...
    • Modelling of SpaceFibre networks 

      Jané Abad, Jaume (Universitat Politècnica de Catalunya, 2018-10-30)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Thales Alenia Space / Institut Supérieur de l'Aéronautique et de l'Espace
      This work presents the implementation of the SpaceFibre protocol for the network simulator MOST NS-3. On board data networks interconnect satellite's modules with mixed requirements on time of deliver delay and jitter. For ...
    • The noise performance of a high-speed capacitive-sensor interface based on a relaxation oscillator and a fast counter 

      Gasulla Forner, Manuel; Li, Xiujun; Meijer, Gerard C. M. (Institute of Electrical and Electronics Engineers, 2005-10)
      Article
      Accés obert
      This paper presents the analysis and experimental results on the noise performances of a capacitive-sensor interface. The interface is able to measure low capacitance values in the order of picofarads and is implemented ...
    • The use of long-term features for GMM- and i-vector-based speaker diarization systems 

      Zewoudie, Abraham Woubie; Luque, Jordi; Hernando Pericás, Francisco Javier (2018-09-26)
      Article
      Accés obert
      Several factors contribute to the performance of speaker diarization systems. For instance, the appropriate selection of speech features is one of the key aspects that affect speaker diarization systems. The other factors ...
    • Using voice-quality measurements with prosodic and spectral features for speaker diarization 

      Zewoudie, Abraham Woubie; Luque, Jordi; Hernando Pericás, Francisco Javier (International Speech Communication Association (ISCA), 2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Jitter and shimmer voice-quality measurements have been successfully used to detect voice pathologies and classify different speaking styles. In this paper, we investigate the usefulness of jitter and shimmer voice ...