Browsing by Subject "Loudspeakers"

Now showing items 1-17 of 17

    • Acoustic cancellation of engine noise by fast adaptive IIR filtering 

      Masgrau Gómez, Enrique José; Rodríguez Fonollosa, José Adrián (Elsevier, 1990)
      Conference report
      Open Access

    • Active control of vibrations on flat plates for loudspeakers 

      Minguell Armengol, Joel (Universitat Politècnica de Catalunya / École Nationale Supérieure de Techniques Avancées, 2009)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      Dans la recherche de nouveaux modes de diffusion sonore, on peut être amené à utiliser des structures diverses, allant du cone utilisé dans les haut-parleurs classiques à d'autres formes plus spécifiques. Ce stage propose ...

    • Análisis eléctrico del altavoz dinámico mediante modelado de anomalías mecánicas de fricción 

      Ruiz Illana, Germán; Sala Caselles, Vicenç; Ortega Redondo, Juan Antonio; Romeral Martínez, José Luis (2010)
      Conference report
      Open Access
      El presente trabajo busca caracterizar el efecto de la fricción del conjunto móvil con el polo o el núcleo de la estructura magnética sobre la corriente absorbida por el altavoz, una de las más relevantes anomalías mecánicas ...

    • Clustering initialization based on spatial information for speaker diarization of meetings 

      Luque Serrano, Jordi; Segura, C.; Hernando Pericás, Francisco Javier (2008)
      Conference report
      Restricted access - publisher's policy
      This paper proposes an initialization for an agglomerative system applied to speaker diarization in the meeting environment. The initialization is based on a previous clustering of the temporal sequence generated by the ...

    • Design and Implementation of Sound Projector Using a 30-Element Loudspeaker 

      Alvaro Arqués, Jordi Albert (Universitat Politècnica de Catalunya, 2009-11-19)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Kungl. Tekniska högskolan. Skolan för elektro- och systemteknik
      For many years, the surround sound effect could only be fully experienced by setting up several speakers, which required considerable wiring for installation in a typical room. Digital sound projectors, one of the most ...

    • Determinación de la presión sonora radiada por pistones circulares y anillos no planos usando un método numérico simplificado 

      Alba, J.; Arenas, J.P.; Rey, R. del (Universitat Politècnica de Catalunya. CIMNE, 2014)
      Article
      Open Access
      Aunque el estudio de la radiación sonora por membranas y placas no es nuevo, recientemente se ha desarrollado una gran cantidad de investigación sobre el tema para abordar aplicaciones actuales y futuras. Se han publicado ...

    • Disseny acústic d'un array d'alta freqüència 

      Ganella Xarau, Marc (Universitat Politècnica de Catalunya, 2015-10-29)
      Bachelor thesis
      Restricted access - author's decision

    • Estudi d'implementació d'una estructura per a millorar la directivitat d'un altaveu 

      Vicente Ballesteros, Álvaro (Universitat Politècnica de Catalunya, 2015-06-12)
      Bachelor thesis
      Restricted access - author's decision
      Sovint, algunes aplicacions en el món del àudio requereixen d’altaveus amb alta directivitat. Avui en dia, però, els altaveus comuns no presenten un comportament directiu per a freqüències baixes. En el present estudi es ...

    • Estudi, disseny i control d'una columna d'altaveus 

      Ribera Cantenys, Albert (Universitat Politècnica de Catalunya, 2017-06-10)
      Bachelor thesis
      Restricted access - author's decision
      Una columna d'altaveus emetent a diferents fases té un patró de directivitat, degut a les interferències entre les ones sonores, que depèn de la distància entre altaveus, la directivitat de cada altaveu, les diferències ...

    • Experimental study of the vortex generated in a bass-reflex port of a loudspeaker 

      Pallejà Cabré, Sergi (Universitat Politècnica de Catalunya, 2015-06-12)
      Bachelor thesis
      Restricted access - author's decision
      A bass-reflex port is an open pipe that connect the volume of the loudspeaker with the surrounding environment. Its role is to accentuate the low frequency range of sound. For some geometries a vortex shedding can be ...

    • Experimental visualization study of the velocity flow in the bass-reflex port of a loudspeaker 

      Cunill Jufré, Jordi (Universitat Politècnica de Catalunya, 2015-01-20)
      Bachelor thesis
      Restricted access - author's decision
      A bass-reflex port is an open pipe that connect the volume of the loudspeaker with the surrounding environment. Its role is to accentuate the low frequency range of sound.  For some geometries a vortex shedding can be ...

    • Improving the location provided by BLE using high frequency tones 

      Garcia Maristany, Gerardo (Universitat Politècnica de Catalunya, 2017-01)
      Bachelor thesis
      Restricted access - confidentiality agreement

    • Loudspeaker Rub Fault Detection by Means of a New Nonstationary Procedure Test 

      Ruiz Illana, Germán; Sala Caselles, Vicenç; Delgado Prieto, Miquel; Ortega Redondo, Juan Antonio (2011)
      Conference report
      Restricted access - publisher's policy
      This paper addresses rub defect loudspeaker detection. The study includes a simulation with a rub model based on classical static coulomb friction added to the loudspeaker nonlinearities parametric model to demonstrate ...

    • Numerical study of the vortex generated in a bass-reflex port of a loudspeaker 

      García Alcaide, Victor Manuel (Universitat Politècnica de Catalunya, 2015-06)
      Bachelor thesis
      Restricted access - author's decision
      A bass-reflex port is an open pipe that connect the volume of the loudspeaker with the surrounding environment. Its role is to accentuate the low frequency range of sound. For some geometries a vortex shedding can be ...

    • Sistema de diagnosi i compensació de fallides en altaveus 

      Casals Tella, Francesc (Universitat Politècnica de Catalunya, 2014-01-22)
      Bachelor thesis
      Restricted access - author's decision

    • Sistema de mesura d'acceleròmetres basat en altaveu 

      Ponce Garcia, Bernat (Universitat Politècnica de Catalunya, 2015-05-11)
      Master thesis (pre-Bologna period)
      Open Access
      [ANGLÈS] The Electronic Engineering Department is developing an accelerometer and, in order to check the reliability of its functionality, it is needed to create a system capable of generating vibrations that will make ...

    • 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, ...