{"id":4667,"date":"2020-07-15T12:02:53","date_gmt":"2020-07-15T10:02:53","guid":{"rendered":"https:\/\/musiculum.de\/?p=4667"},"modified":"2021-11-04T12:23:48","modified_gmt":"2021-11-04T11:23:48","slug":"die-lochsirene","status":"publish","type":"post","link":"https:\/\/musiculum.de\/lochsirene","title":{"rendered":"Die Lochsirene"},"content":{"rendered":"<p>Die <strong>Lochsirene<\/strong> ist ein <strong>Akustik-Exponat<\/strong> im musiculum, das zur Gruppe der <strong>Luftklinger<\/strong> geh\u00f6rt.<\/p>\n<p>Sie besteht aus einer Lochscheibe aus Metall, die durch eine Kurbel ins Rotieren gebracht werden kann. Richtet man einen Luftstrom (z. B. durch einen Strohhalm) auf die sich drehende Lochscheibe, erklingen T\u00f6ne.<\/p>\n<p>Durch den schnellen Wechsel von L\u00f6chern und Metall wird der Luftstrom aus dem Strohhalm geteilt. Somit erh\u00e4lt die Luft hinter der Platte schnell aufeinanderfolgende St\u00f6\u00dfe. Diese Druckwellen breiten sich aus und bilden eine Schallquelle, die wir als typischen Sirenenklang wahrnehmen.<\/p>\n<p>Mit der Lochsirene kann man eine C-Dur-Tonleiter spielen: Sie hat 8 Ringe mit 24, 27, 30, 32, 36, 40, 45 bzw. 48 L\u00f6chern pro Kreis. Somit wird der Luftstrom am inneren Ring 24 Mal pro Umdrehung unterbrochen. Es erklingt ein c\u00b4, w\u00e4hrend der Au\u00dfenkreis mit 48 doppelt so viele L\u00f6cher hat und dadurch ein um eine Oktave h\u00f6herer Ton (c\u2018\u2018) klingt.<\/p>\n<p>Je h\u00e4ufiger der Luftstrom unterbrochen wird, desto schneller schwingt die Umgebungsluft und desto h\u00f6her ist die Tonh\u00f6he.<\/p>\n<h6>Demonstrationsvideo<\/h6>\n<div class=\"lyte-wrapper fourthree\" style=\"width:480px;max-width:100%;margin:5px;\"><div class=\"lyMe\" id=\"WYL_gLl66moWcuo\"><div id=\"lyte_gLl66moWcuo\" data-src=\"https:\/\/musiculum.de\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=%2F%2Fi.ytimg.com%2Fvi%2FgLl66moWcuo%2Fhqdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\"><\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/gLl66moWcuo\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/musiculum.de\/wp-content\/plugins\/wp-youtube-lyte\/lyteCache.php?origThumbUrl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FgLl66moWcuo%2F0.jpg\" alt=\"YouTube video thumbnail\" width=\"480\" height=\"340\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:480px;margin:5px;\"><br\/><span class=\"lyte_disclaimer\">Durch das Abspielen werden auf externe Inhalte zugegriffen. Mehr auf unserer <a href=\"https:\/\/musiculum.de\/index.php\/datenschutz\">Datenschutzerkl\u00e4rung<\/a><\/span><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Die Lochsirene ist ein Akustik-Exponat im musiculum, das zur Gruppe der Luftklinger geh\u00f6rt. Sie besteht aus einer Lochscheibe aus Metall, die durch eine Kurbel ins Rotieren gebracht werden kann. Richtet man einen Luftstrom (z. B. durch einen Strohhalm) auf die sich drehende Lochscheibe, erklingen T\u00f6ne. Durch den schnellen Wechsel von L\u00f6chern und Metall wird der [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4703,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,21],"tags":[],"class_list":["post-4667","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-akustikexponate","category-luftinstrumente"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Die Lochsirene - musiculum<\/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:\/\/musiculum.de\/lochsirene\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Die Lochsirene - musiculum\" \/>\n<meta property=\"og:description\" content=\"Die Lochsirene ist ein Akustik-Exponat im musiculum, das zur Gruppe der Luftklinger geh\u00f6rt. Sie besteht aus einer Lochscheibe aus Metall, die durch eine Kurbel ins Rotieren gebracht werden kann. Richtet man einen Luftstrom (z. B. durch einen Strohhalm) auf die sich drehende Lochscheibe, erklingen T\u00f6ne. 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