{"id":3801,"date":"2012-08-21T08:20:01","date_gmt":"2012-08-21T15:20:01","guid":{"rendered":"http:\/\/rustybolt.info\/wordpress\/?p=3801"},"modified":"2012-09-22T04:39:30","modified_gmt":"2012-09-22T11:39:30","slug":"2012-08-21","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=3801","title":{"rendered":"2012-08-21 Directional Microphone"},"content":{"rendered":"<p><a href=\"http:\/\/rustybolt.info\/wordpress\/?attachment_id=3924\" rel=\"attachment wp-att-3924\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-3924\" title=\"P1020799S2\" src=\"http:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/08\/P1020799S2-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/08\/P1020799S2-300x225.jpg 300w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/08\/P1020799S2.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>I came across and article in an old electronics magazine on how to make a directional microphone with a cardboard horn.\u00a0 I decided to copy the horn part.<\/p>\n<p>The horn consists of four triangle shaped pieced of cardboard cut from boxes.\u00a0 Each of the four pieces is 1 inch (25.4mm) at the small end, 12 inches (300mm) at the large end, and 24 inches (600mm) long.\u00a0 The line from the small to large end has a 1\/2 inch (12.7 mm) &#8216;sag&#8217; at the 12 inch point, and 1\/4 inch (6.3mm) &#8216;sag&#8217; at the 6 and 18 inch points.<\/p>\n<p>I assembled it with short lengths of clear adhesive tape, then covered all the seams with the heavier 2 inch wide box tape.\u00a0 The curved sides help stiffen it, but it still wasn&#8217;t very stiff.\u00a0 I hot glued most of the seams on the inside, and that helped stiffen it a lot.<\/p>\n<p>I still have to mount the microphone and connect it to a microphone preamp.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I came across and article in an old electronics magazine on how to make a directional microphone with a cardboard horn.\u00a0 I decided to copy the horn part. The horn consists of four triangle shaped pieced of cardboard cut from boxes.\u00a0 Each of the four pieces is 1 inch (25.4mm) at the small end, 12<a href=\"https:\/\/rustybolt.info\/wordpress\/?p=3801\"> <\/p>\n<p> (Read More&#8230;)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-3801","post","type-post","status-publish","format-standard","hentry","category-audio"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3801"}],"version-history":[{"count":8,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3801\/revisions"}],"predecessor-version":[{"id":4286,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/3801\/revisions\/4286"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}