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Oriol Guasch  - - - 
Top co-authors
Marc Arnela

18 shared publications

GTM Grup de recerca en Tecnologies Mèdia, La Salle; Universitat Ramon Llull; Barcelona Spain

Laurent Maxit

16 shared publications

INSA Lyon, Laboratoire Vibrations-Acoustique

Joan Camps

1 shared publications

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Publication Record
Distribution of Articles published per year 

Total number of journals
published in
 
3
 
Publications
Article 0 Reads 0 Citations A dual modal formulation for multiple flexural subsystems connected at a junction in energy-based models Laurent Maxit, Oriol Guasch Published: 01 March 2019
Mechanical Systems and Signal Processing, doi: 10.1016/j.ymssp.2018.09.038
DOI See at publisher website
Article 0 Reads 0 Citations Energy-based reformulated Craig-Bampton method for multiple flexural subsystems connected at a junction with low impedan... Laurent Maxit, Oriol Guasch Published: 01 March 2019
Mechanical Systems and Signal Processing, doi: 10.1016/j.ymssp.2018.09.039
DOI See at publisher website
Article 0 Reads 0 Citations Construction of an Omnidirectional Parametric Loudspeaker Consisting in a Spherical Distribution of Ultrasound Transduce... Marc Arnela, Oriol Guasch, Patricia Sánchez-Martín, Joan Cam... Published: 07 December 2018
Sensors, doi: 10.3390/s18124317
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
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, which induces an intense decrease of the sound pressure levels at the edges of the dodechaedron. In this work, the problem is mitigated by building an Omnidirectional Parametric Loudspeaker (OPL), which contains hundreds of small ultrasound transducers set on a sphere. Each transducer emits an ultrasonic carrier wave modulated by an audible signal. Thanks to nonlinear propagation, the air itself demodulates the signal bringing it back to the audible range. The construction of an OPL prototype is challenging. The structure has been built by 3D-printing a set of pieces that conform to the sphere. Each piece contains the exact location of the transducers, which are aligned in parallels to facilitate the structural assembly and the wiring. The performance of the OPL has been tested in an anechoic chamber. Measurements show that the OPL has a good omnidirectional behavior for most frequencies. It clearly improves the directivity of dodechaedral sources in the high frequency range, but performs worse at low frequencies.
Article 0 Reads 0 Citations Computational aeroacoustics to identify sound sources in the generation of sibilant /s/ Arnau Pont, Oriol Guasch, Joan Baiges, Ramon Codina, Annemie... Published: 09 October 2018
International Journal for Numerical Methods in Biomedical Engineering, doi: 10.1002/cnm.3153
DOI See at publisher website
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