Now showing items 1-9 of 9

    • A power flow analysis of a double-deck circular tunnel embedded in a full-space 

      Clot Razquin, Arnau; Romeu Garbí, Jordi; Arcos Villamarín, Robert; Martín Román, Sara-Regina (2014-02)
      Article
      Restricted access - publisher's policy
      The purpose of the present investigation is to obtain the mean power flow radiated by a double-deck circular tunnel and compares it to the one radiated by a simple circular tunnel. To achieve this, a harmonic line load is ...
    • Aircraft localization using a passive acoustic method. Experimental test 

      Martín Román, Sara-Regina; Genesca Francitorra, Meritxell; Romeu Garbí, Jordi; Clot Razquin, Arnau (2016-01)
      Article
      Open Access
      A passive acoustic method for aircraft localization is experimentally tested in this paper. The method relies on the Doppler effect influencing the signals received by a mesh of microphones distributed over the acoustic ...
    • Aircraft tracking by means of the Acoustical Doppler Effect 

      Martín Román, Sara-Regina; Genesca Francitorra, Meritxell; Romeu Garbí, Jordi; Pàmies Gómez, Teresa (2013-07)
      Article
      Restricted access - publisher's policy
      The present paper presents a passive acoustic method for aircraft tracking. The Acoustical Doppler Effect, characteristic of signals received by a mesh of spatially distributed microphones is the basis of the method. A ...
    • Analytical simulations on active control of sound transmission through an aperture in a rectangular enclosure 

      Pàmies Gómez, Teresa; Romeu Garbí, Jordi; Arcos Villamarín, Robert; Martín Román, Sara-Regina (2014-03-01)
      Article
      Restricted access - publisher's policy
      This paper uses an analytical model of sound transmission through an aperture for the study of the performance of an active control of sound inside the enclosure to prevent the transmission of sound through an aperture ...
    • Fast computation of an infinite, longitudinally-varying and harmonic strip load acting on a viscoelastic half-space 

      Arcos Villamarín, Robert; Clot Razquin, Arnau; Romeu Garbí, Jordi; Martín Román, Sara-Regina (2014-02-01)
      Article
      Restricted access - publisher's policy
      In the context of the developing of a numerically efficient model of railway induced ground vibrations, the problem of an infinite, longitudinally-varying and harmonic strip load acting on the surface of a viscoelastic ...
    • New siren tones optimised for increased detectability distances of emergency vehicles 

      Balastegui Manso, Andreu; Romeu Garbí, Jordi; Clot Razquin, Arnau; Martín Román, Sara-Regina (2013-06)
      Article
      Open Access
      Sirens from emergency vehicles are particularly annoying for people living in the vicinities of emergency centres. In order to reduce their discomfort, the present work computes the optimal output power and frequency content ...
    • On the power and frequency of auditory signals on emergency vehicles 

      Balastegui Manso, Andreu; Romeu Garbí, Jordi; Clot Razquin, Arnau; Martín Román, Sara-Regina (2011)
      Conference report
      Restricted access - publisher's policy
      Sirens from emergency vehicles are particularly annoying for people living in the vicinities of hospitals. The power regulations for sirens vary for different countries as well as it does their frequency content. In order ...
    • Passive acoustic method for aircraft localization 

      Martín Román, Sara-Regina (Universitat Politècnica de Catalunya, 2013-07-15)
      Doctoral thesis
      Open Access
      The present thesis investigates a passive acoustic method to locate maneuvering aircraft. The method is based on the acoustical Doppler effect, as a particular effect of the signals received by a mesh of spatially distributed ...
    • Passive acoustic method for aircraft states estimation based on the Doppler effect 

      Martín Román, Sara-Regina; Genesca Francitorra, Meritxell; Romeu Robert, Jordi; Arcos Villamarín, Robert (2014-04-01)
      Article
      Restricted access - publisher's policy
      A passive acoustic method to locate moving sound sources is applied to maneuvering aircraft. The advantages of the method are that it is suitable for all kinds of aircraft, not only propeller-driven, and is not restricted ...