Laser-sound: optoacoustic transduction from digital audio streams

Abstract This work presents a novel laser-based optoacoustic transducer capable of reproducing controlled and continuous sound of arbitrary complexity in the air or on solid targets. Light-to-sound transduction is achieved via laser-induced breakdown, leading to the formation of plasma acoustic sour...

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Autores principales:	Konstantinos Kaleris, Björn Stelzner, Panagiotis Hatziantoniou, Dimosthenis Trimis, John Mourjopoulos
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2d89429d67d149459fdbec34e89e2380
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spelling	oai:doaj.org-article:2d89429d67d149459fdbec34e89e23802021-12-02T13:56:55ZLaser-sound: optoacoustic transduction from digital audio streams10.1038/s41598-020-78990-z2045-2322https://doaj.org/article/2d89429d67d149459fdbec34e89e23802021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78990-zhttps://doaj.org/toc/2045-2322Abstract This work presents a novel laser-based optoacoustic transducer capable of reproducing controlled and continuous sound of arbitrary complexity in the air or on solid targets. Light-to-sound transduction is achieved via laser-induced breakdown, leading to the formation of plasma acoustic sources in any desired spatial location. The acoustic signal is encoded into pulse streams via a discrete-time audio modulation and is reproduced by fast consecutive excitation of the target medium with appropriately modulated laser pulses. This results in the signal being directly reconstructed at the desired location of the target medium without the need for a receiver or demodulation device. In this work, the principles and evaluation results of such a novel laser-sound prototype system are presented. The performance of the prototype is evaluated by systematic experimental measurements of audio test signals, from which the basic acoustical response is derived. Moreover, a generic computational model is presented that allows for the simulation of laser-sound reproduction of 1-bit or multibit audio streams. The model evaluations are validated by comparison with the acoustic measurements, whereby a good agreement is found. Finally, the computational model is used to simulate an ideal optoacoustic transducer based on the specifications of state-of-the-art commercially available lasers.Konstantinos KalerisBjörn StelznerPanagiotis HatziantoniouDimosthenis TrimisJohn MourjopoulosNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Konstantinos Kaleris Björn Stelzner Panagiotis Hatziantoniou Dimosthenis Trimis John Mourjopoulos Laser-sound: optoacoustic transduction from digital audio streams
description	Abstract This work presents a novel laser-based optoacoustic transducer capable of reproducing controlled and continuous sound of arbitrary complexity in the air or on solid targets. Light-to-sound transduction is achieved via laser-induced breakdown, leading to the formation of plasma acoustic sources in any desired spatial location. The acoustic signal is encoded into pulse streams via a discrete-time audio modulation and is reproduced by fast consecutive excitation of the target medium with appropriately modulated laser pulses. This results in the signal being directly reconstructed at the desired location of the target medium without the need for a receiver or demodulation device. In this work, the principles and evaluation results of such a novel laser-sound prototype system are presented. The performance of the prototype is evaluated by systematic experimental measurements of audio test signals, from which the basic acoustical response is derived. Moreover, a generic computational model is presented that allows for the simulation of laser-sound reproduction of 1-bit or multibit audio streams. The model evaluations are validated by comparison with the acoustic measurements, whereby a good agreement is found. Finally, the computational model is used to simulate an ideal optoacoustic transducer based on the specifications of state-of-the-art commercially available lasers.
format	article
author	Konstantinos Kaleris Björn Stelzner Panagiotis Hatziantoniou Dimosthenis Trimis John Mourjopoulos
author_facet	Konstantinos Kaleris Björn Stelzner Panagiotis Hatziantoniou Dimosthenis Trimis John Mourjopoulos
author_sort	Konstantinos Kaleris
title	Laser-sound: optoacoustic transduction from digital audio streams
title_short	Laser-sound: optoacoustic transduction from digital audio streams
title_full	Laser-sound: optoacoustic transduction from digital audio streams
title_fullStr	Laser-sound: optoacoustic transduction from digital audio streams
title_full_unstemmed	Laser-sound: optoacoustic transduction from digital audio streams
title_sort	laser-sound: optoacoustic transduction from digital audio streams
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2d89429d67d149459fdbec34e89e2380
work_keys_str_mv	AT konstantinoskaleris lasersoundoptoacoustictransductionfromdigitalaudiostreams AT bjornstelzner lasersoundoptoacoustictransductionfromdigitalaudiostreams AT panagiotishatziantoniou lasersoundoptoacoustictransductionfromdigitalaudiostreams AT dimosthenistrimis lasersoundoptoacoustictransductionfromdigitalaudiostreams AT johnmourjopoulos lasersoundoptoacoustictransductionfromdigitalaudiostreams
_version_	1718392312913985536

Laser-sound: optoacoustic transduction from digital audio streams

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