{"id":1023,"date":"2012-04-11T16:59:14","date_gmt":"2012-04-11T16:59:14","guid":{"rendered":"http:\/\/www.decomat.com\/?page_id=1023"},"modified":"2014-06-11T18:08:28","modified_gmt":"2014-06-11T16:08:28","slug":"aislante-acustico","status":"publish","type":"page","link":"https:\/\/decomat.com\/ca\/materiales\/aislante\/aislante-acustico\/","title":{"rendered":"A\u00efllant ac\u00fastic"},"content":{"rendered":"

<\/p>\n

A\u00efllant ac\u00fastic<\/h1>\n
\n

Les ones sonores<\/strong> espropaguen en l\u00ednea recta, i al trobar en la seva
\ntraject\u00f2ria un cos compacte es desvien, formant amb <\/strong><\/strong>el material el mateix angle d’incid\u00e8ncia.<\/strong> Aquesta propietat del so resulta en m\u00faltiples ocasions un serios inconvenient. En efecte, en els teatres i en els cinemes les ones sonores que parteixen de l’escenari es transmeten per\u00a0tota la sala, on troben superf\u00edcies compactes en las parets, falsos sostres,\u00a0 pisos o en els empits dels balcons i en les columnes, que es comporten, respecte al so, com una membrana el\u00e0stica.<\/p>\n

Com m\u00e9s compacte \u00e9s un material, major ser\u00e0 la conductibilitat<\/strong><\/p>\n

(Permeabilitat al so<\/em>, o m\u00e9s correctament conductibilitat del so<\/em>. La conductabilitat en els materials es basa primordialment en la seva ompacitat.) ; aleshores, els materials porosos s\u00f3n bons a\u00efllants del so <\/strong><\/strong>i de tot soroll en general.<\/strong> Aquesta propietat ha de tenir-se molt present al seleccionar els materials per a les obres corrents, per\u00f2 m\u00e9s encara si es tracta de locals d’oficines i tallers, on el soroll de las m\u00e0quines \u00e9s inel.ludible.<\/p>\n

No tots els materials reflexen les ones sonores amb la mateixa intensitat; alguns tenen la propietat d’absorbir els sons, propietat anomenada poder <\/em><\/em>d’absorci\u00f3<\/em>.
\nSi en una sala hi ha una finestra oberta, aquesta absorbeix la totalitat del so que incideix en ella. Aleshores, un material poros que <\/strong><\/strong>contingui moltes
\nmol\u00e8cules d’aire absorbir\u00e0 els sons que incideixen en ell amb <\/strong>molta major proporci\u00f3 que un altre m\u00e9s compacte. <\/strong><\/p>\n

En els tallers i oficines on els sorolls s\u00f3n continus, s’utilitzen revestiments de materials porosos, coneguts com antis\u00f2nics, <\/em>amb els quals es tornen silenciosos. S’ha comprobat que el rendiment de treballadors i obrers ha augmentat en les sales on es va colocar un revestiment antis\u00f2nic<\/em>, per\u00f2 tamb\u00e9 s’ha arribat a establir la conveni\u00e8ncia de permetre una petita reflexi\u00f3 de so, coneguda com reverberaci\u00f3<\/em>, perque refor\u00e7a els sons produ\u00efnt una audici\u00f3 correcta i agradable.<\/p>\n

La ind\u00fastria proveeix materials porosos de diversos graus, dels quals han de seleccionar-se els m\u00e9s convenients per a cada cas.<\/p>\n<\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

A\u00efllant ac\u00fastic Les ones sonores espropaguen en l\u00ednea recta, i al trobar en la seva traject\u00f2ria un cos compacte es desvien, formant amb el material el mateix angle d’incid\u00e8ncia. Aquesta propietat del so resulta en m\u00faltiples ocasions un serios inconvenient. En efecte, en els teatres i en els cinemes les ones sonores que parteixen de […]<\/p>\n","protected":false},"author":8979,"featured_media":0,"parent":654,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-1023","page","type-page","status-publish","hentry"],"yoast_head":"\nA\u00efllant ac\u00fastic - decomat<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/decomat.com\/en\/materiales\/aislante\/aislante-acustico\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A\u00efllant ac\u00fastic - decomat\" \/>\n<meta property=\"og:description\" content=\"A\u00efllant ac\u00fastic Les ones sonores espropaguen en l\u00ednea recta, i al trobar en la seva traject\u00f2ria un cos compacte es desvien, formant amb el material el mateix angle d’incid\u00e8ncia. 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