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Reconfigurable and active time-reversal metasurface turns walls into sound routers.

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Τίτλος: Reconfigurable and active time-reversal metasurface turns walls into sound routers.
Συγγραφείς: Dorlot, Florent1 (AUTHOR) florent.dorlot@espci.fr, Bourdeloux, Constant1 (AUTHOR), Fink, Mathias1 (AUTHOR), Lemoult, Fabrice1 (AUTHOR)
Πηγή: Communications Physics. 11/18/2025, Vol. 8 Issue 1, p1-7. 7p.
Θεματικοί όροι: *Acoustic arrays, *Acoustical engineering, *Active noise control, *Noise control, *Auditory perception, *Acoustic devices, *T-symmetry
Περίληψη: Sound control in noisy or reverberant spaces is important for applications ranging from communication to immersive audio. However, existing methods often struggle to deliver sound selectively to specific listeners without interference. Here we show that an active acoustic metasurface, composed of programmable elements that both sense and re-emit sound, enables precise targeting of audio in complex environments. Each element processes signals in real time using convolution filtering, allowing us to exploit reciprocity and time-reversal symmetry in wave propagation. Experiments with audible sound in reverberant rooms demonstrate that this approach creates clear, individualized sound channels while suppressing unwanted noise. This research opens new possibilities for adaptive sound delivery in crowded or dynamic settings, with potential applications in conferencing, entertainment, and assistive listening technologies. Controlling how sound travels in noisy or echo-filled spaces is a long-standing challenge. The authors show that walls covered with programmable acoustic elements can direct sound precisely to chosen listeners, working especially well in reverberant environments. [ABSTRACT FROM AUTHOR]
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  – Url: https://dx.doi.org/doi:10.1038/s42005-025-02351-3
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  – Url: https://resolver.ebsco.com/c/fiv2js/result?sid=EBSCO:asx&genre=article&issn=23993650&ISBN=&volume=8&issue=1&date=20251118&spage=1&pages=1-7&title=Communications Physics&atitle=Reconfigurable%20and%20active%20time-reversal%20metasurface%20turns%20walls%20into%20sound%20routers.&aulast=Dorlot%2C%20Florent&id=DOI:10.1038/s42005-025-02351-3
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  Data: Reconfigurable and active time-reversal metasurface turns walls into sound routers.
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  Data: <searchLink fieldCode="AR" term="%22Dorlot%2C+Florent%22">Dorlot, Florent</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> florent.dorlot@espci.fr</i><br /><searchLink fieldCode="AR" term="%22Bourdeloux%2C+Constant%22">Bourdeloux, Constant</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fink%2C+Mathias%22">Fink, Mathias</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lemoult%2C+Fabrice%22">Lemoult, Fabrice</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Communications+Physics%22">Communications Physics</searchLink>. 11/18/2025, Vol. 8 Issue 1, p1-7. 7p.
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  Data: *<searchLink fieldCode="DE" term="%22Acoustic+arrays%22">Acoustic arrays</searchLink><br />*<searchLink fieldCode="DE" term="%22Acoustical+engineering%22">Acoustical engineering</searchLink><br />*<searchLink fieldCode="DE" term="%22Active+noise+control%22">Active noise control</searchLink><br />*<searchLink fieldCode="DE" term="%22Noise+control%22">Noise control</searchLink><br />*<searchLink fieldCode="DE" term="%22Auditory+perception%22">Auditory perception</searchLink><br />*<searchLink fieldCode="DE" term="%22Acoustic+devices%22">Acoustic devices</searchLink><br />*<searchLink fieldCode="DE" term="%22T-symmetry%22">T-symmetry</searchLink>
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  Label: Abstract
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  Data: Sound control in noisy or reverberant spaces is important for applications ranging from communication to immersive audio. However, existing methods often struggle to deliver sound selectively to specific listeners without interference. Here we show that an active acoustic metasurface, composed of programmable elements that both sense and re-emit sound, enables precise targeting of audio in complex environments. Each element processes signals in real time using convolution filtering, allowing us to exploit reciprocity and time-reversal symmetry in wave propagation. Experiments with audible sound in reverberant rooms demonstrate that this approach creates clear, individualized sound channels while suppressing unwanted noise. This research opens new possibilities for adaptive sound delivery in crowded or dynamic settings, with potential applications in conferencing, entertainment, and assistive listening technologies. Controlling how sound travels in noisy or echo-filled spaces is a long-standing challenge. The authors show that walls covered with programmable acoustic elements can direct sound precisely to chosen listeners, working especially well in reverberant environments. [ABSTRACT FROM AUTHOR]
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        Value: 10.1038/s42005-025-02351-3
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        Text: English
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        Type: general
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              Text: 11/18/2025
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              Y: 2025
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