Exploració per tema "Acoustical engineering"

Ara es mostren els items 21-33 de 33

    • 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)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • Implementation of a microphone array for the detection of the direction of arrival of gunshots 

      Vidal Gutiérrez, Carlos (Universitat Politècnica de Catalunya, 2021-01-24)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Universitetet i Linköping
      This thesis report explains the implementation of a microphone array that consists of 4 microphones and discusses the methodology used to obtain Direction Of Arrival (DOA) estimations from the recordings of the implemented ...

    • 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)
      Report de recerca
      Accés obert
      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)
      Tesina
      Accés restringit per decisió de l'autor
      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)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      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 ...

    • Optimal design of Multiresonant Layered Acoustic Metamaterials (MLAM) via a homogenization approach 

      Sal Anglada, Gaston; Yago Llamas, Daniel; Cante Terán, Juan Carlos; Oliver Olivella, Xavier; Roca Cazorla, David (Elsevier, 2023-10)
      Article
      Accés obert
      Broadband sound attenuation at low frequency ranges (below 500 Hz) has been a challenge in the acoustics field which cannot be solved, via conventional materials, unless impractical amounts of mass are employed. Multiresonant ...

    • Prototipatge d'un sensor mesurador de nivell de so per a la millora de l'ambient d'estudi d'una biblioteca 

      Dagà Corbella, Marc (Universitat Politècnica de Catalunya, 2020-07-16)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Aquesta memòria engloba un projecte de prototipatge d'un sensor mesurador de nivell de so per a la millora de l'ambient d'estudi d'una biblioteca. L’objectiu del projecte és crear un prototip que sigui capaç de mesurar ...

    • Stick-slip phenomena and acoustic emission in the Hertzian linear contact 

      Babici, Laura Mariana; Tudor, Andrei; Romeu Garbí, Jordi (Multidisciplinary Digital Publishing Institute, 2022-09-22)
      Article
      Accés obert
      AE detection and analysis usually requires a specific, costly platform due to its particular burst nature and high-frequency content. This experimental study investigates the relationship between low-demand acoustic emission ...

    • Synthesis procedure for ladder acoustic wave filters starting in series resonator 

      Perea Robles, Rafael; Mateu Mateu, Jordi; Collado Gómez, Juan Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
      Accés obert
      This work provides a new procedure to synthesize acoustic wave ladder filters starting with series resonators. The novelty of this method relies in a new synthesis methodology to extract a series inductance in filter ...

    • Ultrasonic evaluation of bearing steel cleanliness according to ASTM E588 and SEP 1927 

      Jiménez Viader, Jordi (Universitat Politècnica de Catalunya, 2010-05-11)
      Projecte/Treball Final de Carrera
      Accés restringit per acord de confidencialitat

    • Vibroacoustic modelling of orthotropic plates 

      Villar Venini, Jordi (Universitat Politècnica de Catalunya / Politecnico di Milano, 2011)
      Projecte/Treball Final de Carrera
      Accés obert
      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)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      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, ...