{"id":2949,"date":"2017-07-31T11:33:00","date_gmt":"2017-07-31T11:33:00","guid":{"rendered":"http:\/\/revistahometheater.uol.com.br\/portal\/?p=2949"},"modified":"2018-11-06T14:34:54","modified_gmt":"2018-11-06T14:34:54","slug":"fones-de-ouvido-e-as-gravacoes-binaurais","status":"publish","type":"post","link":"https:\/\/www.hometheater.com.br\/portal\/2017\/07\/31\/fones-de-ouvido-e-as-gravacoes-binaurais\/","title":{"rendered":"Fones de ouvido e as grava\u00e7\u00f5es binaurais"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2950\" src=\"http:\/\/revistahometheater.uol.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural.jpg\" alt=\"\" width=\"800\" height=\"532\" srcset=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural.jpg 800w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural-400x266.jpg 400w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural-500x333.jpg 500w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural-300x200.jpg 300w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural-768x511.jpg 768w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural-600x400.jpg 600w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural-210x140.jpg 210w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/binatural-50x33.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>O sistema auditivo dos seres mais evolu\u00eddos \u00e9 classificado como \u201cbinaural\u201d pois envolve dois ouvidos. Esta caracter\u00edstica permite a localiza\u00e7\u00e3o da origem dos sons no espa\u00e7o pelo c\u00e9rebro, ao analisar \u00ednfimas diferen\u00e7as entre os tempos de chegada dos sons nos dois ouvidos.<\/p><div class=\"homet-conteudo\" style=\"text-align: center;\" id=\"homet-3045783057\"><div data-cfpa=\"36066\" data-cfpw=\"36066\" id=\"homet-2223976856\"><a data-no-instant=\"1\" href=\"https:\/\/loja.sommaior.com.br\/\" rel=\"noopener\" class=\"a2t-link\" aria-label=\"ABBEY-ROAD_360x300px\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2025\/10\/ABBEY-ROAD_360x300px.jpg\" alt=\"\"  class=\"no-lazyload\" width=\"300\" height=\"250\"   \/><\/a><\/div><script type=\"text\/javascript\">;new advadsCfpAd( 36066 );<\/script><\/div>\n<p>Gra\u00e7as a ela sobrevivemos ao processo evolutivo sem virar jantar de predadores carn\u00edvoros, e hoje podemos curtir um filme com som surround comendo um belo hamburger nas salas de cinema VIP&#8230;<\/p>\n<p>A audi\u00e7\u00e3o binaural envolve diversos fatores f\u00edsicos, tais como as geometrias da cabe\u00e7a, orelhas, canal auditivo e do torso, al\u00e9m de fatores neurol\u00f3gicos relacionados \u00e0 transdu\u00e7\u00e3o dos sinais ac\u00fasticos, que atingem os t\u00edmpanos em sinais el\u00e9tricos posteriormente processados pelo c\u00e9rebro.<\/p>\n<p>Na eletroac\u00fastica, esse fen\u00f4meno de localiza\u00e7\u00e3o \u00e9 descrito pela HRTF (<em>Head Related Transfer Function<\/em>, \u201cFun\u00e7\u00e3o Transfer\u00eancia Relacionada \u00e0 Cabe\u00e7a\u201d). Sua implementa\u00e7\u00e3o f\u00edsica permite, entre outras coisas, a ilus\u00e3o da reprodu\u00e7\u00e3o multicanal e multidirecional com um fone de ouvido convencional de boa qualidade. Al\u00e9m de dar origem ao moderno campo do som imersivo.<\/p>\n<p>Experimente os dois v\u00eddeos abaixo e curta um pouco desta tecnologia:<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/Sxs-w3EbeJk\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/sKH5D3Znw0Q\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>CLARA, FRITZ, LARS, HARRY E CIA.<\/strong><\/span><\/p>\n<p>Seguindo nossa hagiografia, Les Paul (1915-2009) \u00e9 o Santo Padroeiro das modernas t\u00e9cnicas de grava\u00e7\u00e3o. Ele inventou o conceito de <em>multitracking<\/em>, no final dos anos 50. Este processo permite gravar v\u00e1rias fontes sonoras ao mesmo tempo, sendo cada uma registrada em um canal independente e posteriormente mixadas em um, dois ou mais canais.<\/p>\n<p>\u00c9 na mixagem que se define o panorama, ou onde cada fonte sonora estar\u00e1 posicionada com sua relativa intensidade no plano horizontal, ou, com o advento de tecnologias como o Dolby Atmos, em uma esfera ao redor do ouvinte.<\/p>\n<p>Uma forma mais org\u00e2nica de se gravar sons mantendo suas orienta\u00e7\u00f5es espaciais originais est\u00e1 na grava\u00e7\u00e3o binaural. Esta t\u00e9cnica utiliza arranjos de pares de microfones cujas c\u00e1psulas s\u00e3o orientadas de maneira an\u00e1loga aos t\u00edmpanos, com algum objeto interposto entre os mesmos fazendo o papel do sombreamento da cabe\u00e7a humana.<\/p>\n<p>Escutar uma grava\u00e7\u00e3o binaural com fones de ouvido recria a ilus\u00e3o de estar no ambiente onde tais arranjos foram instalados, sendo muito usuais em grava\u00e7\u00f5es de m\u00fasica cl\u00e1ssica. Nesta ilus\u00e3o, os sons parecem se originar de fora da cabe\u00e7a, ao contr\u00e1rio do que ocorre com as grava\u00e7\u00f5es mixadas em est\u00e9reo convencional, que parecem emanar de dentro da cabe\u00e7a. \u00c9 simplesmente sensacional!<\/p>\n<p>Dentre os arranjos de microfones, podemos destacar Clara, Fritz, Harry e Lars. Clara consiste em uma placa de acr\u00edlico cuja geometria recria a interfer\u00eancia da cabe\u00e7a humana no processo auditivo. Se n\u00e3o me engano, foi desenvolvida na Universidade de Aachen, na Alemanha, um dos \u00faltimos basti\u00f5es da pesquisa e desenvolvimento da eletroac\u00fastica.<\/p>\n<div id='gallery-1' class='gallery galleryid-2949 gallery-columns-3 gallery-size-thumbnail'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/CLARA.png'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/CLARA-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/CLARA-150x150.png 150w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/CLARA-100x100.png 100w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/FRITZ.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/FRITZ-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/FRITZ-150x150.jpg 150w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/FRITZ-100x100.jpg 100w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/HARRY.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/HARRY-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/HARRY-150x150.jpg 150w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/HARRY-100x100.jpg 100w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS.png'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS-150x150.png 150w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS-400x400.png 400w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS-100x100.png 100w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS-500x500.png 500w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS-300x300.png 300w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS-50x50.png 50w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/LARS.png 600w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/TIARA.png'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/TIARA-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/TIARA-150x150.png 150w, https:\/\/www.hometheater.com.br\/portal\/wp-content\/uploads\/2017\/07\/TIARA-100x100.png 100w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<p>J\u00e1 Fritz e Harry, apelidos respectivos dos microfones Neumann KU100 e do AKG D-99C, s\u00e3o dois <em>dummy heads<\/em>, cabe\u00e7as de manequim cujas dimens\u00f5es s\u00e3o esculpidas a partir de milhares de medi\u00e7\u00f5es de cabe\u00e7as humanas e que possuem microfones dentro dos dois canais auditivos contidos nas respectivas orelhas. Ambos s\u00e3o uma solu\u00e7\u00e3o pr\u00e1tica e muito original para grava\u00e7\u00f5es em campo.<\/p>\n<p>Lars, por sua vez, apelido do sistema HATS Type 4100, \u00e9 um simulador de cabe\u00e7a e torso utilizado em pesquisas de psicoac\u00fastica, fabricado pela Br\u00fcel &amp; Kjaer. Outro arranjo que vem ganhando destaque \u00e9 o de tiaras usadas ao redor da cabe\u00e7a, que sustentam microfones em miniatura inseridos no pr\u00f3prio ouvido pelo t\u00e9cnico de som, tais como alguns prot\u00f3tipos desenvolvidos por Paulo Ferreira, experiente e talentoso sound designer de esportes e de dramaturgia baseado no Rio de Janeiro.<\/p>\n<p>Por \u00faltimo, microfones montados nas extremidades de fones intra auriculares s\u00e3o uma solu\u00e7\u00e3o interessante para consumidores finais registrarem seus v\u00eddeos com mais realismo sonoro. A Sennheiser recentemente anunciou o seu Smart Headset como parte da sua plataforma de som imersivo Ambeo, que esta coluna gostaria muito de testar.<\/p>\n<p>No pr\u00f3ximo post, traremos uma conversa com David Chesky, um dos grandes nomes da grava\u00e7\u00e3o audi\u00f3fila e binaural, falando sobre seus trabalhos com Lars.<\/p>\n<p>Enquanto isso, coloque os seus fones de ouvido e vamos jogar um basquete (<a href=\"http:\/\/eventeditora.com.br\/pdf\/basketball.flac\"><strong>clique aqui para fazer o download ou ouvir no seu navegador<\/strong><\/a>**).<\/p>\n<p>Boas audi\u00e7\u00f5es!<\/p>\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<p>**Por\u00a0Dr. Chesky &amp; Mor Mezrich.\u00a0Copyright 2017 Chesky Records<\/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":2954,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,3],"tags":[],"class_list":["post-2949","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 de ouvido e as grava\u00e7\u00f5es binaurais - 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\/07\/31\/fones-de-ouvido-e-as-gravacoes-binaurais\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fones de ouvido e as grava\u00e7\u00f5es binaurais - 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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