Výsledky vyhledávání - "Patricia Sánchez-Martín"

Akademický článek

Construction of an Omnidirectional Parametric Loudspeaker Consisting in a Spherical Distribution of Ultrasound Transducers

Autor: Marc Arnela, Oriol Guasch, Patricia Sánchez-Martín, Joan Camps, Rosa Ma Alsina-Pagès, Carme Martínez-Suquía

Publikováno v: Sensors, Vol 18, Iss 12, p 4317 (2018)

Omnidirectional sound sources are needed to perform a large variety of tests in acoustics. Typically, they consist of conventional speaker drivers arranged in a dodecahedron. However, the directivity of the speaker drivers sharpens with frequency, wh

Externí odkaz: https://doaj.org/article/708dccf0776a4c1ba915ef3ced1d1446

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Application of the transfer matrix approximation for wave propagation in a metafluid representing an acoustic black hole duct termination

Autor: Patricia Sánchez-Martín, Davide Ghilardi, Oriol Guasch

Publikováno v: Applied Mathematical Modelling. 77:1881-1893

The transfer matrix method has been proposed to analyze the acoustic black hole effect in duct terminations. The latter is achieved by placing a retarding waveguide structure inside the duct, which consists in a set of rings whose inner radii decreas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3802118d916f67662036da39a2a459a3
https://doi.org/10.1016/j.apm.2019.09.039

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Far-field directivity of parametric loudspeaker arrays set on curved surfaces

Autor: Patricia Sánchez-Martín, Oriol Guasch

Publikováno v: Applied Mathematical Modelling. 60:721-738

Parametric loudspeaker arrays comprise arrangements of piezoelectric ultrasonic transducers that emit highly directive audible sound, thanks to the nonlinear parametric array phenomenon. Most parametric loudspeakers consist of planar arrays of transd

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5ce326fc3375f5e822ba2857478e290
https://doi.org/10.1016/j.apm.2018.04.002

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Transfer matrices to characterize linear and quadratic acoustic black holes in duct terminations

Autor: Patricia Sánchez-Martín, Oriol Guasch, Marc Arnela

Publikováno v: Journal of Sound and Vibration. 395:65-79

The acoustic black hole (ABH) effect for sound reduction in duct terminations can be accomplished by means of retarding structures. The latter act as waveguides and their performance relies on two factors. First, a power-law decay of the duct radius

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3fed3dd54e2326f68b59b1765874884f
https://doi.org/10.1016/j.jsv.2017.02.007

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Construction of an Omnidirectional Parametric Loudspeaker consisting in a Spherical Distribution of Ultrasound Transducers

Autor: Oriol Guasch, Joan Camps, Patricia Sánchez-Martín, Marc Arnela, Carme Martínez-Suquía, Rosa Ma Alsina-Pagès

Publikováno v: RECERCAT (Dipòsit de la Recerca de Catalunya)
Sensors (Basel, Switzerland)
Sensors, Vol 18, Iss 12, p 4317 (2018)
Sensors
Volume 18
Issue 12
Recercat. Dipósit de la Recerca de Catalunya
instname

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5191ec4c2eedf1cd51baa11e3e38530
https://hdl.handle.net/2072/374120

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From Manifolds to Lagrangian Coherent Structures in galactic bar models

Autor: M. Romero-Gómez, Josep J. Masdemont, Patricia Sánchez-Martín

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Dipòsit Digital de la UB
Universidad de Barcelona

We study the dynamics near the unstable Lagrangian points in galactic bar models using dynamical system tools in order to determine the global morphology of a barred galaxy. We aim at the case of non-autonomous models, in particular with secular evol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a16acf2b39b202f6c5a004a1c9b4e2d6

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A Unified Numerical Simulation of Vowel Production That Comprises Phonation and the Emitted Sound

Autor: Niyazi Cem Degirmenci, Johan Hoffman, Sten Ternström, Johan Jansson, Marc Arnela, Oriol Guasch, Patricia Sánchez-Martín

Publikováno v: INTERSPEECH

A unified approach for the numerical simulation of vowels is presented, which accounts for the self-oscillations of the vocal folds including contact, the generation of acoustic waves and their propagation through the vocal tract, and the sound emiss

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1af4aaf26bcfed0e2ce849d5f18091c0
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-219554

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Residual-based stabilization of the finite element approximation to the acoustic perturbation equations for low Mach number aeroacoustics

Autor: Arnau Pont, Patricia Sánchez-Martín, Ramon Codina, Joan Baiges, Oriol Guasch

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname
Scipedia Open Access
Scipedia SL

This is the peer reviewed version of the following article: [Guasch, O., Sánchez-Martín, P., Pont, A., Baiges, J., and Codina, R. (2016) Residual-based stabilization of the finite element approximation to the acoustic perturbation equations for low

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2178ddefd8f2c1878680b0286f957416
http://hdl.handle.net/2117/99508

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Far field directivity of an omnidirectional parametric loudspeaker consisting of piezoelectric ultrasonic transducers set on a sphere

Autor: Patricia Sánchez-Martín, Oriol Guasch, Marc Arnela

Publikováno v: The Journal of the Acoustical Society of America. 141:3650-3650

In this work, it is proposed to extend the convolution model for the far-field directivity of a parametric loudspeaker array (PLA) in [C. Shi and Y. Kajikawa, J. Acoust. Soc. Am. 137 (2) (2015)] to predict the far-field sound field generated by an om

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46d11ce2e72909e5820d79d809f9483b
https://doi.org/10.1121/1.4987892

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Warp evidence in precessing galactic bar models

Autor: M. Romero-Gómez, Patricia Sánchez-Martín, Josep J. Masdemont

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
Dipòsit Digital de la UB
Universidad de Barcelona
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Most galaxies have a warped shape when they are seen from an edge-on point of view. The reason for this curious form is not completely known so far and in this work we apply dynamical system tools to contribute to its explanation. Starting from a sim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72892767c005b3e8b8fca40116dbb894
https://doi.org/10.1051/0004-6361/201527302

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