Now showing items 1-20 of 20

  • Acoustic emission analysis for the detection of appropriate cutting operations in honing processes 

    Buj Corral, Irene; Álvarez Flórez, Jesús Andrés; Domínguez Fernandez, Alejandro (2018-01-15)
    Article
    Restricted access - publisher's policy
    In the present paper, acoustic emission was studied in honing experiments obtained with different abrasive densities, 15, 30, 45 and 60. In addition, 2D and 3D roughness, material removal rate and tool wear were determined. ...
  • Acoustic Rotor. Driving rotation through acoustic vortex creation and exchange of orbital angular momentum 

    Escobar Torres, Carlota (Universitat Politècnica de Catalunya, 2012)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
  • Acoustic study of a neonatal intensive care unit: preliminary results 

    Raboshchuk, Ganna; Nadeu Camprubí, Climent; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana; Navarro Hervas, Santiago (Copicentro Granada, 2014)
    Conference lecture
    Restricted access - publisher's policy
    The acoustic environment of a typical neonatal intensive care unit is very rich and may contain a large number of di erent sounds, which reflect the activities taking place in it. There exists a medical concern about the ...
  • A knowledge-based approach to automatic detection of equipment alarm sounds in a neonatal intensive care unit environment 

    Raboshchuk, Ganna; Nadeu Camprubí, Climent; Jancovic, Peter; Peiró Lilja, Alexandre Cristian; Kokuer, Munevver; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana (2017-12-21)
    Article
    Open Access
    A large number of alarm sounds triggered by biomedical equipment occur frequently in the noisy environment of a neonatal intensive care unit (NICU) and play a key role in providing healthcare. In this paper, our work on ...
  • Anàlisis i implementació d’un sintetizador virtual amb Pure Data. Trets fonamentals de la síntesis substractiva 

    Gali Romea, Ferran (Universitat Politècnica de Catalunya, 2011-03-15)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  University of Limerick
    English: FulSynth is a Pure Data self-developed virtual subtractive synthesizer. It has led a researching work concerning synthesizers using a subtractive synthesis method. The theoretical fundamentals of subtractive ...
  • A neural network approach for automatic detection of acoustic alarms 

    Peiró Lilja, Alexandre; Raboshchuk, Ganna; Nadeu Camprubí, Climent (Scitepress, 2017)
    Conference lecture
    Restricted access - publisher's policy
    Acoustic alarms generated by biomedical equipment are relevant sounds in the noisy Neonatal Intensive Care Unit (NICU) environment both because of their high frequency of occurrence and their possible negative effects on ...
  • Aplicación de la emisión acústica como método para participar el fallo de tejidos colaginosos (2a parte) 

    García Vilana, Silvia; Martínez González, Eva; Sánchez Molina, David; Arregui Dalmases, Carlos; Velázquez Ameijide, Juan; Llumà Fuentes, Jordi; Rebollo Soria, María Carmen (2016-10-01)
    Article
    Open Access
  • Aproximation of the Aeroacoustics sources with finite element techniques 

    Jazarevic, Vladimir (Universitat Politècnica de Catalunya, 2010-05-05)
    Master thesis
    Open Access
    In this work a stabilized formulation of the nite element method for solving the incompressible Navier-Stokes equation and Lighthill's tensor for calculation of acoustic sources are presented. The important feature of ...
  • Chromatic monitoring of gear mechanical degradation based on acoustic emission 

    Delgado Prieto, Miquel; Zurita Millán, Daniel (Institute of Electrical and Electronics Engineers (IEEE), 2017-11-01)
    Article
    Open Access
    This paper presents a methodology for the feature estimation of a new fault indicator focused on detecting gear mechanical degradation under different operating conditions. Preprocessing of acoustic emission signal is ...
  • Design and implementation of a loudness monitoring system 

    Cenzano Ferret, Jordi (Universitat Politècnica de Catalunya, 2013-07-24)
    Master thesis
    Open Access
    [ANGLÈS] The main objective of the project is to explore the normalization of audio levels in the media industry, which is a relevant issue nowadays. Many broadcast organizations around the world are concerned about this ...
  • Detecció del xiulet per la generació de resums en vídeos esportius 

    Sicília Sansi, Sergi (Universitat Politècnica de Catalunya, 2013-02-19)
    Bachelor thesis
    Open Access
    El present document exposa el desenvolupament de l'aplicació del mètode d'Anàlisi de Components Principals per detectar el xiulet de l'àrbitre en el context de l'extracció automàtica d'esdeveniments d'interès en ...
  • Determination of the correlation between turbulence intensity and acoustic noise level-two clockwise-turning rotors case 

    Vidal Garcia, Omar (Universitat Politècnica de Catalunya / Lodz University of Technology, 2011)
    Master thesis (pre-Bologna period)
    Open Access
    The aim of this project is to find the correlation between turbulence intensity and acoustic noise level. To achieve this aim a test was performed on the 5th of April 2012 in the acoustic laboratory of the Technical ...
  • Disseny de les infraestructures i l'equipament audiovisual d'un auditori / sala de conferències 

    Santos Rodríguez, Javier (Universitat Politècnica de Catalunya, 2012-10-09)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    Auditorium / Conference Hall infrastructures and audiovisual equipment design
  • Fast procedure for the nonlinear analysis of BAW resonators 

    Perea Robles, Rafael; García Pastor, David; Mateu Mateu, Jordi; Collado Gómez, Juan Carlos; Aigner, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference lecture
    Restricted access - publisher's policy
    This work presents the development of a Matlab software tool based on a non-iterative method for the nonlinear analysis of Bulk Acoustic Wave (BAW) resonators and filters. The procedure starts with the admittance matrix ...
  • Impacto acústico generado como consecuencia de la implantación de un skate park 

    Jiménez Diaz, Santiago; Romeu Garbí, Jordi; Alsina Sánchez, Antoni (2012)
    Conference report
    Restricted access - publisher's policy
    Un skate park es una instalación singular formada por un conjunto de elementos y obstáculos, fuentes sonoras potenciales, que se imlpanta en un entorno urbano abierto. El estudio de impacto acústico de este tipo de actividad ...
  • Joint model-based recognition and localization of overlapped acoustic events using a set of distributed small microphone arrays 

    Chakraborty, Rupayan; Nadeu Camprubí, Climent (2017-12-19)
    External research report
    Open Access
    In the analysis of acoustic scenes, often the occurring sounds have to be detected in time, recognized, and localized in space. Usually, each of these tasks is done separately. In this paper, a model-based approach to ...
  • Métodos óptimos de resolución de sistemas lineales en acústica computacional 

    Martos López, José (Universitat Politècnica de Catalunya, 2013-01-11)
    Minor thesis
    Restricted access - author's decision
    Esta tesina intenta encontrar un procedimiento de resolución optimizada de los sistemas lineales resultantes de la modelización de problemas de propagación acústica de manera que las exigencias de cálculo no se conviertan ...
  • On the acoustic environment of a neonatal intensive care unit: initial description, and detection of equipment alarms 

    Raboshchuk, Ganna; Nadeu Camprubí, Climent; Ghahabi Esfahani, Omid; Solvez, Sergi; Muñoz Mahamud, Blanca; Riverola de Veciana, Ana; Navarro Hervas, Santiago (International Speech Communication Association (ISCA), 2014)
    Conference lecture
    Restricted access - publisher's policy
    The acoustic environment of a typical neonatal intensive care unit (NICU) is very rich and may contain a large number of different sounds, which come either from the equipment or from the human activities taking place in ...
  • Vibroacoustic modelling of orthotropic plates 

    Villar Venini, Jordi (Universitat Politècnica de Catalunya / Politecnico di Milano, 2011)
    Master thesis (pre-Bologna period)
    Open Access
    The main objective of the work here presented is to extend the calculation of the radiation efficiency to plates whose characteristics differ form the simply supported isotropic rectangular plates. In this work the radiation ...
  • Voice coil inter-turn faults modeling and simulation 

    Ruiz Illana, Germán; Ortega Redondo, Juan Antonio; Hernández Guiteras, Joan (2012)
    Conference lecture
    Restricted access - publisher's policy
    The purpose of this paper is to present a new model to study intern-turn short circuit faults in a dynamic loudspeaker. The loudspeaker is modeled by using classical voice coil parametric model attached to a mechanical piston, ...