{"id":75838,"date":"2025-11-27T12:12:59","date_gmt":"2025-11-27T10:12:59","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=75838"},"modified":"2025-11-27T12:14:48","modified_gmt":"2025-11-27T10:14:48","slug":"eugenie-dalmas-architectures-bioinspiree-ultra-faible-consommation","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/a-la-une\/eugenie-dalmas-architectures-bioinspiree-ultra-faible-consommation.html","title":{"rendered":"Eug\u00e9nie DALMAS &#8211; 05\/12\/2025 &#8211; Architectures Bioinspir\u00e9es Ultra-Faible Consommation pour la Localisation et la Reconnaissance de Sources Sonores"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_120k98hct2zwk\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-75838'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mih9a83v-a0241ef79b125fa50b831777945a9e71\">\n#top .av-special-heading.av-mih9a83v-a0241ef79b125fa50b831777945a9e71{\nmargin:0 0 10px 0;\npadding-bottom:4px;\ncolor:#e58302;\n}\nbody .av-special-heading.av-mih9a83v-a0241ef79b125fa50b831777945a9e71 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-mih9a83v-a0241ef79b125fa50b831777945a9e71 .special-heading-inner-border{\nborder-color:#e58302;\n}\n.av-special-heading.av-mih9a83v-a0241ef79b125fa50b831777945a9e71 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-mih9a83v-a0241ef79b125fa50b831777945a9e71 av-special-heading-h2 custom-color-heading  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first  av-linked-heading'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : Eug\u00e9nie DALMAS &#8211; Architectures Bioinspir\u00e9es Ultra-Faible Consommation pour la Localisation et la Reconnaissance de Sources Sonores<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-fd5f2e9d63bf552d6910d12f255eb26e'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-649e41ac67c26b53aa0b3d91d18e5f5a\">\n.av_font_icon.av-13ewzjw-649e41ac67c26b53aa0b3d91d18e5f5a{\ncolor:#e58302;\nborder-color:#e58302;\n}\n.av_font_icon.av-13ewzjw-649e41ac67c26b53aa0b3d91d18e5f5a .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-649e41ac67c26b53aa0b3d91d18e5f5a avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<h4><strong><span style=\"color: #e58302;\">Eug\u00e9nie DALMAS<\/span><\/strong><\/h4>\n<p><strong>Vendredi 05 d\u00e9cembre 2025 \u00e0 14h00<br \/>\n<\/strong>Amphith\u00e9\u00e2tre de l\u2019IRCICA<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-26fa44c544b10063385818eda37e027b'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury :<\/span><\/strong><\/h5>\n<ul>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Direction de th\u00e8se \u2013 Christophe Loyez, Directeur de recherche CNRS, IEMN<\/span><\/li>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Co-direction de th\u00e8se \u2013 Fran\u00e7ois Danneville, Professeur des universit\u00e9s, Universit\u00e9 de Lille \/ IEMN<\/span><\/li>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Rapporteur \u2013 Blaise Yvert, Directeur de recherche, Inserm Grenoble Alpes<\/span><\/li>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Rapporteur \u2013 Damien Querlioz, Directeur de recherche CNRS, C2N Paris-Saclay<\/span><\/li>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Examinateur \u2013 Pierre Boulet, Professeur des universit\u00e9s, Universit\u00e9 de Lille \/ CRIStAL<\/span><\/li>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Examinatrice \u2013 Elena Ioana Vatajelu, Charg\u00e9e de recherche CNRS, Laboratoire TIMA<\/span><\/li>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Invit\u00e9 \u2013 Michael Bocquet, Ma\u00eetre de conf\u00e9rences, Universit\u00e9 Polytechnique Hauts-de-France \/ IEMN<\/span><\/li>\n<li><span style=\"font-size: 11pt; font-family: arial, helvetica, sans-serif;\">Invit\u00e9e \u2013 Fouzia Boukour, Directrice de recherche, Universit\u00e9 Gustave Eiffel \/ LEOST<\/span><\/li>\n<\/ul>\n<h5><span style=\"color: #800000;\">Summary:<\/span><\/h5>\n<p>Le biomim\u00e9tisme est une approche de plus en plus r\u00e9pandue dans les diff\u00e9rents domaines scientifiques. Il est r\u00e9guli\u00e8rement la source de nouveaux paradigmes et, depuis quelques ann\u00e9es, a impuls\u00e9 le traitement et les technologies neuromorphiques qui portent la promesse d\u2019avanc\u00e9es significatives dans le domaine de la th\u00e9orie de l&rsquo;information et une efficacit\u00e9 \u00e9nerg\u00e9tique sans pr\u00e9c\u00e9dent. Avec cette approche, les syst\u00e8mes artificiels \u00e0 impulsions inspir\u00e9s du traitement neuronal dans le cerveau peuvent traiter des signaux issus de diverses modalit\u00e9s.<br \/>\nDans le contexte de la surveillance acoustique de la biodiversit\u00e9, cette th\u00e8se explore le potentiel d&rsquo;une technologie neuromorphique analogique int\u00e9grant des transistors \u00e0 effet de champ m\u00e9tal-oxyde-semi-conducteur fonctionnant en r\u00e9gime sous-le-seuil avec une puissance consomm\u00e9e ultra-faible (ULP). En tenant compte des contraintes ULP, des outils de pr\u00e9-traitement bioinspir\u00e9s et \u00e9conomes en \u00e9nergie sont con\u00e7us pour la localisation et la reconnaissance des sources sonores et leur performances sont \u00e9valu\u00e9es.<br \/>\nTout d&rsquo;abord, un extracteur original de diff\u00e9rence interaurale de temps (ITD) est mod\u00e9lis\u00e9 d&rsquo;apr\u00e8s le d\u00e9tecteur de mouvement Hassenstein-Reichardt, choisi pour son faible nombre de neurones, et appliqu\u00e9 aux signaux acoustiques pour estimer la direction d&rsquo;arriv\u00e9e des sources sonores. L&rsquo;extracteur d\u2019ITD est \u00e9valu\u00e9 en simulation sur la base d&rsquo;enregistrements en int\u00e9rieur en 2D et 3D \u00e0 des distances comprises entre 24 cm et 10 m, en particulier pour des sons de type clic. Une technique simplifi\u00e9e de multilat\u00e9ration hyperbolique permet d&rsquo;analyser les performances de localisation de l&rsquo;extracteur d\u2019ITD, et qui r\u00e9sulte en des pr\u00e9cisions azimutales encourageantes, compte tenu de sa consommation potentielle d&rsquo;ULP, de 73,9 % (\u00b12,5\u00b0) et 77 % (\u00b15\u00b0) entre 1 m et 3 m pour les sons de type clic.<br \/>\nEnsuite, dans le but de traiter des sc\u00e9narios multisources, un d\u00e9tecteur de caract\u00e9ristiques temporelles inspir\u00e9 du m\u00e9canisme de reconnaissance du chant d&rsquo;appel des criquets femelles a \u00e9t\u00e9 con\u00e7u et int\u00e9gr\u00e9 sur puce \u00e0 partir de la technologie neuromorphique sous-le-seuil. Test\u00e9 sur un banc sous pointes avec des signaux artificiels et des chants d&rsquo;appel de criquets r\u00e9els, le d\u00e9tecteur atteint une consommation totale inf\u00e9rieure au nanowatt dans des sc\u00e9narios calmes ou bruyants, avec une grande pr\u00e9cision et un recall encourageant.<br \/>\nFinalement, la combinaison de plusieurs instances de ces deux outils de pr\u00e9-traitement permet d&rsquo;envisager des applications de suivi et de comptage des sources acoustiques.<\/p>\n<h5><span style=\"color: #800000;\">Abstract:<\/span><\/h5>\n<p>Biomimetism is an increasingly widespread approach in various scientific fields. It regularly gives rise to new paradigms and, in recent years, has driven neuromorphic computing and technologies which promise significant advances in the field of information theory and unprecedented energy efficiency. With this approach, artificial spiking systems inspired by the neuronal impulse processing in the brain can process signals from various modalities.<br \/>\nIn the context of acoustic monitoring of biodiversity, this thesis investigates the potential of an analog neuromorphic technology integrating metal-oxide-semiconductor field-effect transistors operating in the subthreshold regime with ultra-low power (ULP) consumption. Keeping ULP constraints under consideration, bioinspired energy-efficient precomputing tools are designed for sound source localization and recognition and their performances assessed.<br \/>\nFirstly, an original interaural time difference (ITD) extractor is modelled after the Hassenstein-Reichardt detector of motion detection, chosen for its low number of neurons, and applied to acoustic signals for estimation of sound sources\u2019 direction of arrival. The ITD extractor is evaluated in simulation on the basis of 2-D and 3-D indoor recordings at distances between 24 cm and 10 m of click-like sounds in particular. A simplified hyperbolic multilateration technique enables the analysis of the ITD extractor\u2019s localization performances, resulting in encouraging azimuth accuracies, in view of its potential ULP consumption, of 73.9% (\u00b12.5\u00b0) and 77% (\u00b15\u00b0) between 1 m and 3 m for click like sounds.<br \/>\nThen, with the aim to address multisource scenarios, a detector of temporal characteristics inspired by the calling song recognition mechanism of female field crickets is designed and successfully implemented on chip using the subthreshold neuromorphic technology. Tested under a probe station with artificial and real-world cricket calling songs, the detector reaches a sub-nanowatt total power consumption in quiet or noisy scenarios with high precision and encouraging recall.<br \/>\nFinally, combining multiple instances of these two precomputing tools enables one to envision acoustic source tracking and counting applications.<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":71083,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,8,199],"tags":[],"class_list":["post-75838","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-actualites","category-these"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/75838","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=75838"}],"version-history":[{"count":3,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/75838\/revisions"}],"predecessor-version":[{"id":76652,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/75838\/revisions\/76652"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/71083"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=75838"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=75838"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=75838"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}