Mimicking the cochlea with an active acoustic metamaterial
The human ear is a fascinating sensor, capable of detecting pressures over ten octaves of frequency and twelve orders of magnitudes. Here, following a biophysical model, we demonstrate experimentally that the physics of a living cochlea can be emulated by an active one-dimensional acoustic metamater...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2019-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ab3d8f |
| _version_ | 1797749980925001728 |
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| author | Matthieu Rupin Geoffroy Lerosey Julien de Rosny Fabrice Lemoult |
| author_facet | Matthieu Rupin Geoffroy Lerosey Julien de Rosny Fabrice Lemoult |
| author_sort | Matthieu Rupin |
| collection | DOAJ |
| description | The human ear is a fascinating sensor, capable of detecting pressures over ten octaves of frequency and twelve orders of magnitudes. Here, following a biophysical model, we demonstrate experimentally that the physics of a living cochlea can be emulated by an active one-dimensional acoustic metamaterial. The latter solely consists on a set of subwavelength active acoustic resonators, coupled to a main propagating waveguide. By introducing a gradient in the resonators’ properties, we establish an experimental set-up which mimics the dynamical responses of both the dead and the living cochleae: the cochlear tonotopy as well as the low-amplitude sound amplifier are reproduced. |
| first_indexed | 2024-03-12T16:26:23Z |
| format | Article |
| id | doaj.art-5efba985fbcc4108bd82cd249171c0dd |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:26:23Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-5efba985fbcc4108bd82cd249171c0dd2023-08-08T15:42:07ZengIOP PublishingNew Journal of Physics1367-26302019-01-0121909301210.1088/1367-2630/ab3d8fMimicking the cochlea with an active acoustic metamaterialMatthieu Rupin0Geoffroy Lerosey1https://orcid.org/0000-0002-7087-5377Julien de Rosny2Fabrice Lemoult3https://orcid.org/0000-0001-9757-0760Institut Langevin, CNRS UMR 7587, ESPCI Paris, PSL Research University , 1 rue Jussieu, F-75005 Paris, FranceGreenerwave, ESPCI Paris Incubator PC′up, 6 rue Jean Calvin, F-75005 Paris, FranceInstitut Langevin, CNRS UMR 7587, ESPCI Paris, PSL Research University , 1 rue Jussieu, F-75005 Paris, FranceInstitut Langevin, CNRS UMR 7587, ESPCI Paris, PSL Research University , 1 rue Jussieu, F-75005 Paris, FranceThe human ear is a fascinating sensor, capable of detecting pressures over ten octaves of frequency and twelve orders of magnitudes. Here, following a biophysical model, we demonstrate experimentally that the physics of a living cochlea can be emulated by an active one-dimensional acoustic metamaterial. The latter solely consists on a set of subwavelength active acoustic resonators, coupled to a main propagating waveguide. By introducing a gradient in the resonators’ properties, we establish an experimental set-up which mimics the dynamical responses of both the dead and the living cochleae: the cochlear tonotopy as well as the low-amplitude sound amplifier are reproduced.https://doi.org/10.1088/1367-2630/ab3d8facousticsinner earhearingmetamaterial |
| spellingShingle | Matthieu Rupin Geoffroy Lerosey Julien de Rosny Fabrice Lemoult Mimicking the cochlea with an active acoustic metamaterial New Journal of Physics acoustics inner ear hearing metamaterial |
| title | Mimicking the cochlea with an active acoustic metamaterial |
| title_full | Mimicking the cochlea with an active acoustic metamaterial |
| title_fullStr | Mimicking the cochlea with an active acoustic metamaterial |
| title_full_unstemmed | Mimicking the cochlea with an active acoustic metamaterial |
| title_short | Mimicking the cochlea with an active acoustic metamaterial |
| title_sort | mimicking the cochlea with an active acoustic metamaterial |
| topic | acoustics inner ear hearing metamaterial |
| url | https://doi.org/10.1088/1367-2630/ab3d8f |
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