{"id":3439,"date":"2017-10-31T15:59:44","date_gmt":"2017-10-31T15:59:44","guid":{"rendered":"http:\/\/revistahometheater.uol.com.br\/portal\/?p=3439"},"modified":"2018-07-31T20:18:10","modified_gmt":"2018-07-31T20:18:10","slug":"fones-com-cancelamento-ativo-de-ruidos","status":"publish","type":"post","link":"https:\/\/www.hometheater.com.br\/portal\/2017\/10\/31\/fones-com-cancelamento-ativo-de-ruidos\/","title":{"rendered":"Fones com Cancelamento Ativo de Ru\u00eddos"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3440\" src=\"http:\/\/revistahometheater.uol.com.br\/portal\/wp-content\/uploads\/2017\/10\/fone_aviao.jpg\" alt=\"\" width=\"800\" height=\"496\" srcset=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/10\/fone_aviao.jpg 800w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/10\/fone_aviao-400x248.jpg 400w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/10\/fone_aviao-500x310.jpg 500w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/10\/fone_aviao-300x186.jpg 300w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/10\/fone_aviao-768x476.jpg 768w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/10\/fone_aviao-50x31.jpg 50w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<a href=\"#\" target=\"_self\" class=\"buttons btn_blue left\"><span class=\"left\">Por Alexandre Algranti*<\/span><\/a>\n<p><b>Alexandre Algranti \u00e9 o Chief Headphone Officer do site\u00a0<a href=\"http:\/\/fonesdeouvido.com.br\/\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=pt-BR&amp;q=http:\/\/fonesdeouvido.com.br&amp;source=gmail&amp;ust=1533149937818000&amp;usg=AFQjCNHopNVmYZpZ4AqVmsnNf6CPS0k-gA\">fonesdeouvido.com.br<\/a>. Leitores deste blog tem 10% de desconto em qualquer compra no site com o c\u00f3digo HT2018.<\/b><\/p>\n<p>Como dito anteriormente, o sil\u00eancio \u00e9 um luxo e o mundo moderno agride constantemente os nossos ouvidos.<\/p><div class=\"homet-conteudo\" style=\"text-align: center;\" id=\"homet-267557811\"><div data-cfpa=\"35734\" data-cfpw=\"35734\" id=\"homet-4120065515\"><a data-no-instant=\"1\" href=\"https:\/\/www.harmanluxuryaudio.com\/\" rel=\"noopener\" class=\"a2t-link\" aria-label=\"ARCAM-SA45-BANNER-NEWSLETTER\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2025\/09\/ARCAM-SA45-BANNER-NEWSLETTER.gif\" alt=\"\"  class=\"no-lazyload\" width=\"300\" height=\"250\"   \/><\/a><\/div><h6><span style=\"color: #808080;\"><em>Publicidade<\/em><\/span><\/h6>\r\n<\/br><script type=\"text\/javascript\">;new advadsCfpAd( 35734 );<\/script><\/div>\n<p>Os fones de ouvido e protetores em geral reduzem o ru\u00eddo ambiente ao bloquear o canal auditivo e absorver parte da energia ac\u00fastica dirigida aos t\u00edmpanos.<\/p>\n<p>Eu particularmente quando vou a um show costumo levar um protetor do tipo over ear para manobrista de avi\u00f5es em solo fabricado pela David Clark e, em casos extremos, complemento com uma espuma deform\u00e1vel que introduzo no canal auditivo.<\/p>\n<p>Segundo a David Clark o meu protetor over ear reduz o ru\u00eddo em 24 dB, ent\u00e3o aquele show de Heavy Metal em um local fechado rolando a uma m\u00e9dia de 95 dB SPL e com picos devastadores de 105 dB SPL soa mais palat\u00e1vel na regi\u00e3o entre 71 e 81 dB SPL&#8230;<\/p>\n<p>Dada a natureza ondulat\u00f3ria do som, onde as ondas sonoras podem se refor\u00e7ar em um extremo ou se aniquilar em outro, temos a\u00ed a base da tecnologia de cancelamento ativo de ru\u00eddos cujo desenvolvimento se originou com o advento dos sistemas telef\u00f4nicos no s\u00e9culo 19.<\/p>\n<p>Se o meu protetor reduz o ru\u00eddo de forma passiva, isso \u00e9 , meramente ao cobrir os meus ouvidos e sem nenhum dispositivo adicional, os fones e protetores com cancelamento ativo de ru\u00eddo utilizam microfones e circuitos que captam o ru\u00eddo externo e geram um sinal denominado anti-ru\u00eddo, geralmente otimizado para a faixa de frequ\u00eancias geradas por turbinas de aeronaves, o seu principal ambiente de utiliza\u00e7\u00e3o.<\/p>\n<p>O efeito psicoac\u00fastico resultante da combina\u00e7\u00e3o do ru\u00eddo externo com o anti-ru\u00eddo interno \u00e9 uma sens\u00edvel redu\u00e7\u00e3o na percep\u00e7\u00e3o do primeiro, criando um santu\u00e1rio sint\u00e9tico de tranquilidade e reduzindo o estresse principalmente durante longos voos intercontinentais, mesmo no conforto da Primeira e da Classe Executiva.<\/p>\n<p>Esse blog j\u00e1 testou e aprovou os seguintes fones de ouvido com cancelamento ativo de ru\u00eddos de quatro dos principais fabricantes mundiais da categoria, dispon\u00edveis para compra no Brasil:<\/p>\n<ul>\n<li><a href=\"http:\/\/www.mercuryshop.com.br\/fone-de-ouvido-in-ear-com-cancelamento-ativo-de-ruido-quietpointr-anc-ath-anc33is-audio-technica.html\"><strong>Audio-Technica ATH-ANC33is<\/strong>,\u00a0<\/a> clique no link para comprar.<\/li>\n<li><a href=\"http:\/\/www.karimex.com.br\/tecnologia-e-consumo\/fone-de-ouvido-audio-technica-quietpoint-sobre-auriculares-com-microfone-e-controle-ath-anc50is\"><strong>Audio-Technica ATH-ANC50iS<\/strong>,<\/a> clique no link para comprar.<\/li>\n<li>Bose Quiet Comfort 35, dispon\u00edvel nas lojas DUFRY nos principais aeroportos internacionais<\/li>\n<li>AKG N60NC, dispon\u00edvel nas lojas DUFRY nos principais aeroportos internacionais e na<strong> <a href=\"http:\/\/www.fnac.com.br\">fnac.com.br<\/a><\/strong><\/li>\n<li>Sennheiser PXC 500 wireless, dispon\u00edvel <strong><a href=\"http:\/\/pt-br.sennheiser.com\/fone-de-ouvido-sem-fio-bluetooth-headset-com-microfone-pxc-550-travel\">aqui<\/a><\/strong>.<\/li>\n<\/ul>\n<p><strong>*<b>Alexandre Algranti \u00e9 o Chief Headphone Officer do site\u00a0<a href=\"http:\/\/fonesdeouvido.com.br\/\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?hl=pt-BR&amp;q=http:\/\/fonesdeouvido.com.br&amp;source=gmail&amp;ust=1533144072574000&amp;usg=AFQjCNHkG2ioRTN3DT4-R_g8r3YoCb8mFw\">fonesdeouvido.com.br<\/a>. Leitores deste blog tem 10% de desconto em qualquer compra no site com o c\u00f3digo HT2018.<\/b><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alexandre Algranti \u00e9 o Chief Headphone Officer do site\u00a0fonesdeouvido.com.br. Leitores deste blog tem 10% de desconto em qualquer compra no site com o c\u00f3digo HT2018.<\/p>\n","protected":false},"author":1,"featured_media":3441,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,3],"tags":[],"class_list":["post-3439","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fones-de-ouvido","category-artigos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Fones com Cancelamento Ativo de Ru\u00eddos - HT &amp; Casa Digital<\/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:\/\/www.hometheater.com.br\/portal\/2017\/10\/31\/fones-com-cancelamento-ativo-de-ruidos\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fones com Cancelamento Ativo de Ru\u00eddos - HT &amp; Casa Digital\" \/>\n<meta property=\"og:description\" content=\"Alexandre Algranti \u00e9 o Chief Headphone Officer do site\u00a0fonesdeouvido.com.br. 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