Browsing by Subject "Sound-waves"
Now showing items 1-13 of 13
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A comparative study of two compact finite difference methods: standard vs. mimetic
(Sociedad Venezolana de Métodos Numéricos en Ingeniería, 2014)
Conference report
Restricted access - publisher's policyIn this work, we implement two fourth-order compact finite differences (CFD) methods and use them to model wave propagation on a elastic string. The formulation of the first method employs the standard implicit CFD constructed ... -
A performance analysis of a mimetic finite difference scheme for acoustic wave propagation on GPU platforms
(2017-02-01)
Article
Open AccessRealistic applications of numerical modeling of acoustic wave dynamics usually demand high-performance computing because of the large size of study domains and demanding accuracy requirements on simulation results. Forward ... -
Alternating direction implicit time integrations for finite difference acoustic wave propagation: parallelization and convergence
(Elsevier, 2020-06-15)
Article
Restricted access - publisher's policyThis work studies the parallelization and empirical convergence of two finite difference acoustic wave propagation methods on 2-D rectangular grids, that use the same alternating direction implicit (ADI) time integration. ... -
An equivalent model for lateral modes on the H2 response of bulk acoustic wave resonators
(Institute of Electrical and Electronics Engineers (IEEE), 2020)
Conference report
Restricted access - publisher's policyAn equivalent circuital model is proposed for the lateral modes of a BAW resonator. It is based in the Mason model, adding a dispersive a transmission line to model the Lamb waves along the lateral dimensions of the ... -
Avoiding core's DUE & SDC via acoustic wave detectors and tailored error containment and recovery
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Conference report
Open AccessThe trend of downsizing transistors and operating voltage scaling has made the processor chip more sensitive against radiation phenomena making soft errors an important challenge. New reliability techniques for handling ... -
Computational Material design study of acoustic metamaterials and structures by topology optimization
(Universitat Politècnica de Catalunya, 2016-06)
Master thesis
Restricted access - author's decisionAcoustic metamaterials are artificially designed and manufactured structures with dy-namical properties that are not typically found in naturally-occurring materials. The design of acoustic metamaterials is considered to ... -
Enhanced transmission band in periodic media with loss modulation
(2014-11-17)
Article
Open AccessWe study the propagation of waves in a periodic array of absorbing layers. We report an anomalous increase of wave transmission through the structure related to a decrease of the absorption around the Bragg frequencies. ... -
Estudio comparativo de cálculos de Tiempo de Reverberación de salas mediante simulación basada en trazado de rayos
(Universitat Politècnica de Catalunya, 2016)
Master thesis (pre-Bologna period)
Open AccessComparative study of Reverberation Time methods available on two acoustics simulation tools (EASE and CATT). Different aspects of the used computing routines were evaluated and the validity of the results were discussed ... -
Online detection of partial discharges in medium and high voltage cable accessories by acoustic emissions
(2017-12)
Article
Open Access -
Parallelization of finite difference methods: Nodal and mimetic solutions of the wave equation
(Universitat Politècnica de Catalunya, 2016)
Master thesis (pre-Bologna period)
Open AccessIn the present work we analyze two finite difference methods for the propagation of acoustic waves proposed by Córdova et al. to optimize its performance. The computational domain is rectangular. The first of these methods ... -
Sensor Array Optimization for multiple harmonic sound source separation and DOA
(Universitat Politècnica de Catalunya, 2013-07)
Master thesis (pre-Bologna period)
Open Access
Covenantee: Lunds universitet[ANGLÈS] This Proyect investigates how to realize a Goniometer Antenna to record communications, as well as the implementation of an algorithm to optimize the location of the sensors with the intend of separating the ... -
Smartphone relative positioning using phone sensors
(Universitat Politècnica de Catalunya, 2016-06)
Bachelor thesis
60 months embargo -
Sound directivity by PT-symmetric acoustic dipoles
(International Society for Photo-Optical Instrumentation Engineers (SPIE), 2021)
Conference report
Open AccessThe new physics of open-dissipative, non-Hermitian systems have become a fruitful playground to uncover novel physical phenomena, even in exotic or counterintuitive ways, especially in optics and, more recently, also in ...
