Browsing by Subject "Enginyeria acústica"
Now showing items 1-20 of 21
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Acoustic emission analysis for the detection of appropriate cutting operations in honing processes
(2018-01-15)
Article
Open AccessIn the present paper, acoustic emission was studied in honing experiments obtained with different abrasive densities, 15, 30, 45 and 60. In addition, 2D and 3D roughness, material removal rate and tool wear were determined. ... -
Acoustic metamaterials with controllable transmission: from complete sound attenuation to a transparent state.
(Universitat Politècnica de Catalunya, 2020-04-24)
Master thesis
Restricted access - author's decision
Covenantee: Rijksuniversiteit GroningenThis project deals with the design and analysis of sound scattering in acoustic metamaterials with the aim to realize a controllable transmission response. First, a so-called stealth acoustic metamaterial is studied. This ... -
Acoustic Rotor. Driving rotation through acoustic vortex creation and exchange of orbital angular momentum
(Universitat Politècnica de Catalunya, 2012)
Master thesis (pre-Bologna period)
Restricted access - author's decision -
Acoustic study of a neonatal intensive care unit: preliminary results
(Copicentro Granada, 2014)
Conference lecture
Restricted access - publisher's policyThe acoustic environment of a typical neonatal intensive care unit is very rich and may contain a large number of di erent sounds, which reflect the activities taking place in it. There exists a medical concern about the ... -
A knowledge-based approach to automatic detection of equipment alarm sounds in a neonatal intensive care unit environment
(2017-12-21)
Article
Open AccessA large number of alarm sounds triggered by biomedical equipment occur frequently in the noisy environment of a neonatal intensive care unit (NICU) and play a key role in providing healthcare. In this paper, our work on ... -
An acoustic emission activity detection method based on short-term waveform features: application to metallic components under uniaxial tensile test
(2020-08-01)
Article
Restricted access - publisher's policyThe Acoustic Emission (AE) phenomenon has been used as a powerful tool with the purpose to either detect, locate or assess damage for a wide range of applications. Derived from its monitoring, one major current challenge ... -
Anàlisis i implementació d’un sintetizador virtual amb Pure Data. Trets fonamentals de la síntesis substractiva
(Universitat Politècnica de Catalunya, 2011-03-15)
Master thesis (pre-Bologna period)
Open Access
Covenantee: University of LimerickEnglish: FulSynth is a Pure Data self-developed virtual subtractive synthesizer. It has led a researching work concerning synthesizers using a subtractive synthesis method. The theoretical fundamentals of subtractive ... -
Analysis of fracture resistance of tool steels by means of acoustic emission
(2010-12-10)
Article
Restricted access - publisher's policyThe automotive manufacturers currently use advanced high-strength steels (AHSS) to produce lightweight vehicles with increased safety performance. While showing excellent strengthto-weight ratios, AHSS have several limitations ... -
A neural network approach for automatic detection of acoustic alarms
(Scitepress, 2017)
Conference lecture
Restricted access - publisher's policyAcoustic alarms generated by biomedical equipment are relevant sounds in the noisy Neonatal Intensive Care Unit (NICU) environment both because of their high frequency of occurrence and their possible negative effects on ... -
Aproximation of the Aeroacoustics sources with finite element techniques
(Universitat Politècnica de Catalunya, 2010-05-05)
Master thesis
Open AccessIn this work a stabilized formulation of the nite element method for solving the incompressible Navier-Stokes equation and Lighthill's tensor for calculation of acoustic sources are presented. The important feature of ... -
Classificació d’àudio DCASE Challenge
(Universitat Politècnica de Catalunya, 2019-06-09)
Bachelor thesis
Open AccessEl DCASE Challenge és una competició internacional anual per fer una avaluació dels sistemes en la detecció d'esdeveniments d'àudio i classificació d'escenes acústiques. El repte acostuma a tenir diverses tasques, com per ... -
Design and implementation of a loudness monitoring system
(Universitat Politècnica de Catalunya, 2013-07-24)
Master thesis
Open Access[ANGLÈS] The main objective of the project is to explore the normalization of audio levels in the media industry, which is a relevant issue nowadays. Many broadcast organizations around the world are concerned about this ... -
Determination of the correlation between turbulence intensity and acoustic noise level-two clockwise-turning rotors case
(Universitat Politècnica de Catalunya / Lodz University of Technology, 2011)
Master thesis (pre-Bologna period)
Open AccessThe aim of this project is to find the correlation between turbulence intensity and acoustic noise level. To achieve this aim a test was performed on the 5th of April 2012 in the acoustic laboratory of the Technical ... -
Disseny acústic d'un array d'alta freqüència
(Universitat Politècnica de Catalunya, 2015-10-29)
Bachelor thesis
Restricted access - author's decision -
Disseny de les infraestructures i l'equipament audiovisual d'un auditori / sala de conferències
(Universitat Politècnica de Catalunya, 2012-10-09)
Master thesis (pre-Bologna period)
Restricted access - author's decisionAuditorium / Conference Hall infrastructures and audiovisual equipment design -
Joint model-based recognition and localization of overlapped acoustic events using a set of distributed small microphone arrays
(2017-12-19)
External research report
Open AccessIn 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
(Universitat Politècnica de Catalunya, 2013-01-11)
Minor thesis
Restricted access - author's decisionEsta 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 ... -
Numerical study on the influence of acoustic natural frequencies on the dynamic behaviour of submerged and confined disk-like structures
(2017-08)
Article
Open AccessThe dynamic response of disks has been deeply studied in the last years given that their dynamic characteristics present similarities with more complex disk-like structures used in real engineering applications, such as ... -
On the acoustic environment of a neonatal intensive care unit: initial description, and detection of equipment alarms
(International Speech Communication Association (ISCA), 2014)
Conference lecture
Restricted access - publisher's policyThe 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 ... -
Radiación acústica por superficies planas: aplicación a altavoces
(Universitat Politècnica de Catalunya, 2003)
Article
Open AccessEn los sistemas de reproducción sonora es habitual la utilización de altavoces dinámicos. Sin embargo, en aplicaciones específicas, puede ser necesaria y/o conveniente la utilización de altavoces alternativos con superficies ...
