{"id":431177,"date":"2023-09-04T11:24:58","date_gmt":"2023-09-04T09:24:58","guid":{"rendered":"https:\/\/www.eenewseurope.com\/?p=431177"},"modified":"2023-09-04T11:26:33","modified_gmt":"2023-09-04T09:26:33","slug":"des-mems-ultrasons-ameliorent-les-haut-parleurs-audio","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/des-mems-ultrasons-ameliorent-les-haut-parleurs-audio\/","title":{"rendered":"Des MEMS ultrasons am\u00e9liorent les haut-parleurs audio"},"content":{"rendered":"

SonicEdge Ltd. (Binyamina, Isra\u00ebl), fond\u00e9e en novembre 2018, d\u00e9veloppe un haut-parleur audio MEMS bas\u00e9 sur les ultrasons.<\/h2>\n

Ce syst\u00e8me est cens\u00e9 fournir un son am\u00e9lior\u00e9 dans les petits facteurs de forme \u00e0 la fois aux basses et hautes fr\u00e9quences et un fonctionnement \u00e9tendu jusqu’\u00e0 20 kHz et au-del\u00e0. Les applications du syst\u00e8me \u00e0 ultrasons concernent donc les \u00ab\u00a0suspects habituels\u00a0\u00bb des appareils auditifs : oreillettes, casques et lunettes de r\u00e9alit\u00e9 augment\u00e9e et virtuelle, \u00e9couteurs et aides auditives.<\/p>\n

Parmi les autres avantages revendiqu\u00e9s des haut-parleurs SonicEdge, citons leur taille r\u00e9duite, l’absence de vibrations et la r\u00e9duction de la taille de la cavit\u00e9 arri\u00e8re. L’entreprise vise d’abord le march\u00e9 des \u00e9couteurs et des oreillettes True Wireless System (TWS), o\u00f9 les haut-parleurs SonicEdge pourraient permettre de fabriquer des \u00e9couteurs plus petits et de meilleure qualit\u00e9 sonore.<\/p>\n

Le principe de l’utilisation de la modulation d’une porteuse d’ultrasons pour produire un son conventionnel est bien connu comme moyen de produire un son diffus\u00e9 et localis\u00e9. Dans ce contexte, une m\u00e9thode consiste \u00e0 utiliser l’interf\u00e9rence h\u00e9t\u00e9rodyne de deux faisceaux ultrasonores pour obtenir un son conventionnel uniquement \u00e0 l’endroit o\u00f9 les deux faisceaux ultrasonores se croisent.<\/p>\n

Les haut-parleurs SonicEdge utilisent des haut-parleurs MEMS int\u00e9gr\u00e9s de mani\u00e8re monolithique pour g\u00e9n\u00e9rer un signal ultrasonore modul\u00e9 \u00e0 partir d’un r\u00e9seau d’environ 200 g\u00e9n\u00e9rateurs d’ultrasons dans une matrice de 3,5 mm par 3,5 mm. Les ultrasons sont transform\u00e9s en sons audibles par un transformateur de fr\u00e9quence acoustom\u00e9canique – ou grille m\u00e9tallique. Cela permet de cr\u00e9er une source de vitesse d’air \u00e0 volume constant, quelle que soit la fr\u00e9quence. Cela permet d’obtenir un niveau de pression sonore plus \u00e9lev\u00e9 que les haut-parleurs MEMS conventionnels dans les basses fr\u00e9quences et une gamme de fr\u00e9quences plus large, affirme l’entreprise.<\/p>\n

\"\"

SonicEdge utilise un d\u00e9flecteur acoustique pour d\u00e9moduler la porteuse d’ultrasons en produisant des fr\u00e9quences audio. Source : SonicEdge.<\/strong><\/em><\/p><\/div>\n

Le premier produit de la soci\u00e9t\u00e9 est le SE1000, un ensemble de deux puces comprenant un transducteur ultrasonore MEMS et un d\u00e9modulateur qui g\u00e9n\u00e8re le son, ainsi qu’un ASIC qui encode les ultrasons et pilote la puce MEMS.<\/p>\n

La soci\u00e9t\u00e9 envisage d’augmenter le nombre de puces MEMS avec deux dans le SE2000, et jusqu’\u00e0 quatre ou huit dans les SE3000, SE4000 et SE5000 pour r\u00e9pondre \u00e0 des applications telles que les casques d’\u00e9coute.<\/p>\n

\"\"

Une solution \u00e0 deux puces pour les \u00e9couteurs peut \u00eatre mise \u00e0 l’\u00e9chelle avec plusieurs MEMS pour les casques et les casques AR\/VR. Source : SonicEdge.<\/strong><\/em><\/p><\/div>\n

La soci\u00e9t\u00e9 a \u00e9t\u00e9 cofond\u00e9e par Azi Mizrachi, qui occupe le poste de directeur des op\u00e9rations, et son directeur g\u00e9n\u00e9ral est Moti Margalit.<\/p>\n

Depuis 2021, l’entreprise recrute au Danemark et dispose d’une unit\u00e9 de recherche et d\u00e9veloppement \u00e0 Struer, au Danemark.<\/p>\n

Liens et articles connexes :<\/h4>\n

www.sonicedge.io<\/a><\/p>\n

Articles de presse :<\/h4>\n

xMEMS met en production des haut-parleurs et des \u00e9vents programmables<\/a><\/p>\n

USound est confiant dans sa capacit\u00e9 \u00e0 battre Bosch sur le march\u00e9 des microphones MEMS <\/a><\/p>\n

Bosch ach\u00e8te une start-up sp\u00e9cialis\u00e9e dans les micro-haut-parleurs MEMS<\/a><\/p>\n

La start-up Chirp Microsystems int\u00e8gre InvenSense de TDK<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

SonicEdge Ltd. (Binyamina, Isra\u00ebl), fond\u00e9e en novembre 2018, d\u00e9veloppe un haut-parleur audio MEMS bas\u00e9 sur les ultrasons. Ce syst\u00e8me est cens\u00e9 fournir un son am\u00e9lior\u00e9 dans les petits facteurs de forme \u00e0 la fois aux basses et hautes fr\u00e9quences et un fonctionnement \u00e9tendu jusqu’\u00e0 20 kHz et au-del\u00e0. Les applications du syst\u00e8me \u00e0 ultrasons concernent […]<\/p>\n","protected":false},"author":34,"featured_media":430727,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3669],"tags":[4557,2224],"domains":[47],"ppma_author":[3631,1153],"class_list":["post-431177","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouvelles","tag-audio-fr","tag-mems-fr","domains-electronique-eci"],"acf":[],"yoast_head":"Des MEMS ultrasons am\u00e9liorent les haut-parleurs audio ...<\/title>\n<meta name=\"description\" content=\"SonicEdge Ltd. 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