{"id":36282,"date":"2024-03-06T09:14:54","date_gmt":"2024-03-06T08:14:54","guid":{"rendered":"https:\/\/moonwires.com\/glossaire-technique-des-cables-audio\/"},"modified":"2024-09-10T14:20:05","modified_gmt":"2024-09-10T12:20:05","slug":"glossaire-technique-des-cables-audio","status":"publish","type":"page","link":"https:\/\/moonwires.com\/fr\/glossaire-technique-des-cables-audio\/","title":{"rendered":"Glossaire technique des c\u00e2bles audio"},"content":{"rendered":"\t\t
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Glossaire technique des c\u00e2bles audio<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Pour une meilleure compr\u00e9hension des<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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ph\u00e9nom\u00e8nes physiques et plus encore...<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tQuestions techniques<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tQuestions fr\u00e9quentes<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tTh\u00e9ories fondamentales<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tSp\u00e9cifications techniques<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tQuestions techniques<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tQue signifie la capacit\u00e9 d'un c\u00e2ble ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

La capacitance d’un c\u00e2ble est une mesure de sa capacit\u00e9 \u00e0 stocker une charge \u00e9lectrique. Cette propri\u00e9t\u00e9 est fondamentale dans le domaine de l’\u00e9lectronique et de l’\u00e9lectrotechnique, car elle affecte la mani\u00e8re dont les signaux \u00e9lectriques se propagent \u00e0 travers le c\u00e2ble. La capacitance est g\u00e9n\u00e9ralement mesur\u00e9e en farads (F), bien que dans le contexte des c\u00e2bles, on utilise souvent des sous-unit\u00e9s comme le microfarad (\u03bcF), le nanofarad (nF) ou le picofarad (pF) en raison des faibles valeurs de capacitance impliqu\u00e9es.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tComment est g\u00e9n\u00e9r\u00e9e la capacitance dans un c\u00e2ble?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

La capacitance d’un c\u00e2ble est principalement g\u00e9n\u00e9r\u00e9e par deux facteurs : la proximit\u00e9 des conducteurs (les fils \u00e0 l’int\u00e9rieur du c\u00e2ble) et le mat\u00e9riau di\u00e9lectrique (isolant) qui les s\u00e9pare. Lorsque deux conducteurs sont proches l’un de l’autre, s\u00e9par\u00e9s par un isolant, ils forment un condensateur. La capacit\u00e9 de ce condensateur (ou la capacitance du c\u00e2ble) d\u00e9pend de la surface des conducteurs, de la distance entre eux et du type de mat\u00e9riau di\u00e9lectrique utilis\u00e9.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tEn quoi la capacitance est-elle positive ou n\u00e9gative au niveau des sp\u00e9cifications du c\u00e2ble?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

La question de la capacitance \u00e9tant \u00ab\u00a0positive ou n\u00e9gative\u00a0\u00bb dans les sp\u00e9cifications d’un c\u00e2ble peut pr\u00eater \u00e0 confusion. En physique, la capacitance est une grandeur toujours positive, car elle repr\u00e9sente une capacit\u00e9 de stockage d’\u00e9nergie. Cependant, dans le contexte des sp\u00e9cifications d’un c\u00e2ble, parler de capacitance \u00ab\u00a0positive\u00a0\u00bb ou \u00ab\u00a0n\u00e9gative\u00a0\u00bb n’est pas habituel. Ce qui peut varier, c’est l’effet que la capacitance a sur la performance du c\u00e2ble dans certaines applications :<\/p>\n

Effets positifs : Dans certains cas, une certaine quantit\u00e9 de capacitance est souhaitable. Par exemple, dans les circuits de filtrage ou dans les applications o\u00f9 le c\u00e2ble agit comme un condensateur int\u00e9gr\u00e9.<\/p>\n

Effets n\u00e9gatifs : Dans d’autres cas, une capacitance \u00e9lev\u00e9e peut \u00eatre pr\u00e9judiciable. Par exemple, dans les c\u00e2bles de transmission de donn\u00e9es \u00e0 haute vitesse, une capacitance trop \u00e9lev\u00e9e peut causer une distorsion du signal ou une att\u00e9nuation, r\u00e9duisant ainsi la qualit\u00e9 de la transmission.<\/p>\n

En r\u00e9sum\u00e9, la capacitance d’un c\u00e2ble est une caract\u00e9ristique intrins\u00e8que qui d\u00e9crit sa capacit\u00e9 \u00e0 stocker une charge \u00e9lectrique. Bien que la valeur de la capacitance soit toujours positive, son effet sur la performance d’un c\u00e2ble peut \u00eatre consid\u00e9r\u00e9 comme \u00ab\u00a0positif\u00a0\u00bb ou \u00ab\u00a0n\u00e9gatif\u00a0\u00bb selon l’application. Les sp\u00e9cifications d’un c\u00e2ble incluront souvent sa capacitance pour aider les ing\u00e9nieurs et les techniciens \u00e0 choisir le bon c\u00e2ble pour une application donn\u00e9e, en fonction de la mani\u00e8re dont la capacitance affectera la performance du syst\u00e8me.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tQu'est-ce que l'effet tribo\u00e9lectrique dans les c\u00e2bles audio ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

L’effet tribo\u00e9lectrique se produit lorsque les mat\u00e9riaux isolants des c\u00e2bles se frottent les uns contre les autres ou contre d’autres objets, g\u00e9n\u00e9rant ainsi une charge \u00e9lectrique due au transfert d’\u00e9lectrons. Cet effet peut induire des bruits ou des interf\u00e9rences dans les signaux audio, particuli\u00e8rement dans les environnements o\u00f9 les c\u00e2bles sont soumis \u00e0 des mouvements fr\u00e9quents.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tComment minimiser l'impact de la tribo\u00e9lectricit\u00e9 sur la qualit\u00e9 du son dans les syst\u00e8mes audio ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Pour r\u00e9duire les effets de la tribo\u00e9lectricit\u00e9, il est conseill\u00e9 d’utiliser des c\u00e2bles compos\u00e9s d’isolants di\u00e9lectriques de qualit\u00e9. Les c\u00e2bles con\u00e7us avec des mat\u00e9riaux anti-statiques ou avec des propri\u00e9t\u00e9s minimisant le frottement peuvent \u00e9galement aider. De plus, \u00e9viter de trop manipuler ou d\u00e9placer les c\u00e2bles dans des environnements secs peut diminuer la g\u00e9n\u00e9ration de charges \u00e9lectrostatiques.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tQuestions fr\u00e9quentes<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tQuels sont les avantages de l'utilisation du sable de quartz et de la shungite dans le blindage des c\u00e2bles audio haut de gamme ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Le sable de quartz et la shungite offrent une protection sup\u00e9rieure contre les interf\u00e9rences \u00e9lectromagn\u00e9tiques (EMI), garantissant une transmission du signal audio d’une grande puret\u00e9. Le sable quartzeux, avec ses propri\u00e9t\u00e9s isolantes exceptionnelles, r\u00e9duit la perte de signal et am\u00e9liore la clart\u00e9 du son. La shungite est r\u00e9put\u00e9e pour sa capacit\u00e9 \u00e0 absorber et \u00e0 neutraliser les interf\u00e9rences \u00e9lectromagn\u00e9tiques, prot\u00e9geant ainsi les signaux audio des perturbations ext\u00e9rieures. Ensemble, ces min\u00e9raux contribuent \u00e0 la fid\u00e9lit\u00e9 du son en pr\u00e9servant l’int\u00e9grit\u00e9 du signal audio pour une exp\u00e9rience d’\u00e9coute in\u00e9gal\u00e9e.<\/p>\n

R\u00e9f\u00e9rences litt\u00e9raires :<\/p>\n

(1) \u00ab\u00a0Electromagnetic Shielding\u00a0\u00bb by Salvatore Celozzi, Rodolfo Araneo, et Giampiero Lovat<\/p>\n

(2) \u00ab\u00a0Materials for Electromagnetic Interference Shielding\u00a0\u00bb – diary of Materials Chemistry.<\/p>\n

(3) Advanced Materials for Electromagnetic Shielding: Fundamentals, Properties, and Applications\u00a0\u00bb by Xingcui Guo, Xingyi Huang, & Yuvaraj Haldorai.<\/p>\n

(4) Shungite Waste \u2013 An Effective Mineral Additive for Concrete Modification<\/p>\n

(5) Nanomaterials for Electromagnetic Shielding\u00a0\u00bb – the magazine ACS Applied Nano Materials.<\/p>\n

(6) The Role of Carbon Materials in Enhancing Electromagnetic Interference Shielding Effectiveness<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tComment le sable quartzeux et la shungite contribuent-ils \u00e0 la protection contre les interf\u00e9rences \u00e9lectromagn\u00e9tiques (IEM) ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Le sable de quartz et la shungite jouent un r\u00f4le crucial dans la protection contre les interf\u00e9rences \u00e9lectromagn\u00e9tiques gr\u00e2ce \u00e0 leurs propri\u00e9t\u00e9s uniques. Le sable quartzeux agit comme un isolant naturel, emp\u00eachant les interf\u00e9rences \u00e9lectromagn\u00e9tiques de p\u00e9n\u00e9trer et d’affecter le signal audio. D’autre part, la shungite poss\u00e8de une structure mol\u00e9culaire sp\u00e9ciale qui lui permet d’absorber les ondes \u00e9lectromagn\u00e9tiques nocives, r\u00e9duisant ainsi consid\u00e9rablement les interf\u00e9rences. La combinaison de ces min\u00e9raux dans le blindage du c\u00e2ble assure une protection efficace contre les interf\u00e9rences \u00e9lectromagn\u00e9tiques, ce qui permet une transmission plus pure du signal.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tExiste-t-il des diff\u00e9rences significatives entre les c\u00e2bles blind\u00e9s avec du sable de quartz et ceux blind\u00e9s avec de la shungite ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Si les deux min\u00e9raux offrent une protection contre les interf\u00e9rences \u00e9lectromagn\u00e9tiques, ils le font de mani\u00e8re l\u00e9g\u00e8rement diff\u00e9rente. Les c\u00e2bles blind\u00e9s avec du sable de quartz se concentrent davantage sur l’isolation physique du signal, offrant une barri\u00e8re contre les perturbations externes. \u00c0 l’inverse, les c\u00e2bles blind\u00e9s avec de la shungite utilisent la capacit\u00e9 unique de ce min\u00e9ral \u00e0 absorber et \u00e0 neutraliser activement les interf\u00e9rences \u00e9lectromagn\u00e9tiques. En fonction de l’environnement sp\u00e9cifique et du niveau d’interf\u00e9rence \u00e9lectromagn\u00e9tique, l’un peut \u00eatre pr\u00e9f\u00e9r\u00e9 \u00e0 l’autre. Cependant, pour une protection optimale, l’utilisation combin\u00e9e des deux min\u00e9raux dans le blindage des c\u00e2bles audio peut offrir les meilleurs r\u00e9sultats.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tQuelle est l'histoire de l'utilisation des min\u00e9raux dans le blindage des c\u00e2bles \u00e9lectriques et audio ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

L’utilisation de min\u00e9raux dans le blindage des c\u00e2bles remonte \u00e0 plusieurs d\u00e9cennies, lorsque divers mat\u00e9riaux ont \u00e9t\u00e9 \u00e9tudi\u00e9s pour leurs propri\u00e9t\u00e9s protectrices contre les interf\u00e9rences. Au d\u00e9part, les m\u00e9taux \u00e9taient les plus couramment utilis\u00e9s pour le blindage, mais la d\u00e9couverte des propri\u00e9t\u00e9s uniques de certains min\u00e9raux a \u00e9largi les options disponibles. Le sable quartzeux et la shungite, en particulier, ont gagn\u00e9 en popularit\u00e9 en raison de leur efficacit\u00e9 \u00e0 neutraliser les interf\u00e9rences \u00e9lectromagn\u00e9tiques et \u00e0 pr\u00e9server la qualit\u00e9 du signal. Cette \u00e9volution refl\u00e8te l’engagement continu de l’industrie \u00e0 trouver des solutions innovantes pour am\u00e9liorer la transmission des signaux dans un monde de plus en plus envahi par les interf\u00e9rences.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tDans quelles autres applications industrielles des min\u00e9raux tels que le sable de quartz et la shungite sont-ils utilis\u00e9s pour le blindage, en dehors des c\u00e2bles audio ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Le sable de quartz et la shungite trouvent des applications de blindage bien au-del\u00e0 des c\u00e2bles audio, dans divers domaines o\u00f9 la protection contre les interf\u00e9rences \u00e9lectromagn\u00e9tiques est cruciale. Par exemple, ils sont utilis\u00e9s pour le blindage des c\u00e2bles de communication, des \u00e9quipements \u00e9lectroniques de pr\u00e9cision et m\u00eame dans les infrastructures critiques telles que les installations m\u00e9dicales et les centres de donn\u00e9es ou encore dans des installations extr\u00eamement complexes comme les acc\u00e9l\u00e9rateurs de particules*. En outre, leur capacit\u00e9 \u00e0 prot\u00e9ger contre les interf\u00e9rences \u00e9lectromagn\u00e9tiques les rend pr\u00e9cieux pour le d\u00e9veloppement de mat\u00e9riaux et de technologies destin\u00e9s \u00e0 la protection de l’environnement et \u00e0 la fabrication de pointe, ce qui d\u00e9montre la polyvalence de ces min\u00e9raux en mati\u00e8re de blindage contre les perturbations \u00e9lectromagn\u00e9tiques.<\/p>\n

*REFERENCES:<\/p>\n

(1) CERN 82-05 Super Proton Synchrotron Division June 4th, 1982 \u00ab\u00a0Radiation-Resistant Magnets\u00a0\u00bb CERN European Organization for Nuclear Research \u2013 RL. Keizer and M. Mottier -1982<\/p>\n

(2) NUREG\/CR-6384_BNL-NUREG-52480 \u00ab\u00a0Literature Review of Environmental Qualifications of Safety Related Electrical Cables\u201d Brookhaven National Laboratory \u2013 M. Subudhi -1996<\/p>\n

(3) \u201cMineral Insulated Conductors for Magnetic Coils\u201d Los Alamos National Laboratory \u2013 A. Harvey \u2013 1970<\/p>\n

(4) SLAC-PUB-4910 Stanford University \u201cRadiation Hardening of Magnet Coils\u201d Stanford Linear Accelerator Center \u2013 A. Harvey \u2013 1989<\/p>\n

(5) CERN Geneva, Switzerland \u201dDielectric Insulation and High Voltage Issues\u201d \u2013 D. Tommasini<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tQuels sont les avantages des gaines en basalte dans les c\u00e2bles audio ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Les gaines en basalte, fabriqu\u00e9es \u00e0 partir de fibres de roche volcanique, offrent d’excellentes propri\u00e9t\u00e9s d’isolation thermique et \u00e9lectrique. Elles sont particuli\u00e8rement efficaces pour r\u00e9duire les effets tribo\u00e9lectriques gr\u00e2ce \u00e0 leur capacit\u00e9 \u00e0 absorber et \u00e0 dissiper les charges \u00e9lectrostatiques. De plus, le basalte \u00e9tant un mat\u00e9riau naturellement r\u00e9sistant aux hautes temp\u00e9ratures et non conducteur, il am\u00e9liore la durabilit\u00e9 des c\u00e2bles tout en minimisant les risques de perturbations \u00e9lectriques dues au frottement. Ces caract\u00e9ristiques font des gaines en basalte un choix privil\u00e9gi\u00e9 pour les applications audio haut de gamme o\u00f9 la puret\u00e9 du signal est cruciale.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tTh\u00e9ories fondamentales<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tPourquoi des c\u00e2bles, dont les sp\u00e9cifications techniques semblent identiques, peuvent-ils produire des exp\u00e9riences auditives diff\u00e9rentes ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Dans le domaine de l’audio haute-fid\u00e9lit\u00e9, la qu\u00eate d’un son parfait se concentre souvent sur les composants apparents tels que les amplificateurs, les haut-parleurs et les sources audio. Cependant, un \u00e9l\u00e9ment crucial et souvent sous-estim\u00e9 joue un r\u00f4le fondamental dans la cha\u00eene audio : les c\u00e2bles.<\/p>\n

Pierre Johannet, chercheur \u00e0 EDF, a men\u00e9 une recherche approfondie qui a mis en \u00e9vidence l’impact significatif des micro-d\u00e9charges d’interface (MDI) sur les c\u00e2bles audio, qui ne sont pas directement mesurables par les sp\u00e9cifications techniques standard des c\u00e2bles.<\/p>\n

Des diff\u00e9rences microscopiques dans la fabrication ou le mat\u00e9riau des c\u00e2bles peuvent influencer la fr\u00e9quence et l’intensit\u00e9 des MDI, entra\u00eenant des variations subtiles mais perceptibles de la qualit\u00e9 du son. Cela souligne l’importance de prendre en compte des facteurs au-del\u00e0 des sp\u00e9cifications techniques traditionnelles lors de l’\u00e9valuation des performances des c\u00e2bles audio.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t

\n\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t<\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\tQu'est-ce qui diff\u00e9rencie le MDI des autres formes de perturbations \u00e9lectriques dans les c\u00e2bles audio ?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t

Les microd\u00e9charges d’interface (MDI) se distinguent par le fait qu’elles proviennent d’irr\u00e9gularit\u00e9s microscopiques \u00e0 l’interface entre le conducteur et son isolant, g\u00e9n\u00e9rant des hautes fr\u00e9quences qui perturbent directement le signal audio par la modulation du bruit de fond. Contrairement aux interf\u00e9rences \u00e9lectromagn\u00e9tiques (EMI) ou au bruit de fond habituel, les MDI sont difficiles \u00e0 d\u00e9tecter et \u00e0 analyser avec des mesures conventionnelles en raison de leur nature transitoire et de leur fr\u00e9quence \u00e9lev\u00e9e.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\tBACK TO HOME PAGE<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Glossaire technique des c\u00e2bles audio Pour une meilleure compr\u00e9hension des ph\u00e9nom\u00e8nes physiques et plus encore… Questions techniques Questions fr\u00e9quentes Th\u00e9ories fondamentales Sp\u00e9cifications techniques Questions techniques Que signifie la capacit\u00e9 d’un c\u00e2ble ? La capacitance d’un c\u00e2ble est une mesure de sa capacit\u00e9 \u00e0 stocker une charge \u00e9lectrique. Cette propri\u00e9t\u00e9 est fondamentale dans le domaine de […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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