Parlante superdireccional de matriz paramétrica

In this work, a directional loudspeaker, also known as a parametric array loudspeaker (PAL), is designed and constructed. The operation is based on the phenomenon called self-demodulation that happens when high-frequency beams interact in a viscous medium, due to its non-linear properties. The sound...

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Detalles Bibliográficos
Autores principales: Montes de Oca, Axel, Verne, Santiago Andrés, Vechiatti, Nilda, Muravchik, Carlos Horacio
Formato: Articulo
Lenguaje:Español
Publicado: 2019
Materias:
Ingeniería Electrónica
Parametric array
Directional
Speaker
Matriz paramétrica
Direccional
Parlante
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118897
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-118897
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ingeniería Electrónica
Parametric array
Directional
Speaker
Matriz paramétrica
Direccional
Parlante
spellingShingle Ingeniería Electrónica
Parametric array
Directional
Speaker
Matriz paramétrica
Direccional
Parlante
Montes de Oca, Axel
Verne, Santiago Andrés
Vechiatti, Nilda
Muravchik, Carlos Horacio
Parlante superdireccional de matriz paramétrica
topic_facet Ingeniería Electrónica
Parametric array
Directional
Speaker
Matriz paramétrica
Direccional
Parlante
description In this work, a directional loudspeaker, also known as a parametric array loudspeaker (PAL), is designed and constructed. The operation is based on the phenomenon called self-demodulation that happens when high-frequency beams interact in a viscous medium, due to its non-linear properties. The sound obtained after the self-demodulation is formed in the beam of the ultrasonic carrier signal propagating beyond the absorption distance in which the carrier has been sufficiently attenuated. This generates a focused audible signal and therefore a directional polar pattern of narrow angle. In this paper two modulation methods are evaluated: double-sideband amplitude (AM-DBL) and pulse-width modulation (PWM). Its effect on directionality, sound pressure level and harmonic distortion is experimentally analyzed.
format Articulo
Articulo
author Montes de Oca, Axel
Verne, Santiago Andrés
Vechiatti, Nilda
Muravchik, Carlos Horacio
author_facet Montes de Oca, Axel
Verne, Santiago Andrés
Vechiatti, Nilda
Muravchik, Carlos Horacio
author_sort Montes de Oca, Axel
title Parlante superdireccional de matriz paramétrica
title_short Parlante superdireccional de matriz paramétrica
title_full Parlante superdireccional de matriz paramétrica
title_fullStr Parlante superdireccional de matriz paramétrica
title_full_unstemmed Parlante superdireccional de matriz paramétrica
title_sort parlante superdireccional de matriz paramétrica
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/118897
work_keys_str_mv AT montesdeocaaxel parlantesuperdireccionaldematrizparametrica
AT vernesantiagoandres parlantesuperdireccionaldematrizparametrica
AT vechiattinilda parlantesuperdireccionaldematrizparametrica
AT muravchikcarloshoracio parlantesuperdireccionaldematrizparametrica
AT montesdeocaaxel superdirectionalparametricarrayloudspeaker
AT vernesantiagoandres superdirectionalparametricarrayloudspeaker
AT vechiattinilda superdirectionalparametricarrayloudspeaker
AT muravchikcarloshoracio superdirectionalparametricarrayloudspeaker
bdutipo_str Repositorios
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