{"id":45,"date":"2010-03-06T20:19:29","date_gmt":"2010-03-06T20:19:29","guid":{"rendered":"http:\/\/mitat.tuu.fi\/?p=45"},"modified":"2010-03-17T20:55:37","modified_gmt":"2010-03-17T20:55:37","slug":"line-level-audio-signal-voltage","status":"publish","type":"post","link":"http:\/\/mitat.tuu.fi\/?p=45","title":{"rendered":"Line level audio signal voltage"},"content":{"rendered":"<p>Line level audio signal voltage seems to vary between -1.5V .. +1.5V on iPod Touch (2nd generation) with maximum volume.<\/p>\n<p>Attached screenshot from oscilloscoped signal from iPod Touch playing 440hz sine wave .WAV file.<\/p>\n<p><a href=\"http:\/\/mitat.tuu.fi\/wp-content\/uploads\/2010\/03\/440.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-46\" title=\"440\" src=\"http:\/\/mitat.tuu.fi\/wp-content\/uploads\/2010\/03\/440-300x219.jpg\" alt=\"\" width=\"300\" height=\"219\" srcset=\"http:\/\/mitat.tuu.fi\/wp-content\/uploads\/2010\/03\/440-300x219.jpg 300w, http:\/\/mitat.tuu.fi\/wp-content\/uploads\/2010\/03\/440.jpg 320w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>See also http:\/\/en.wikipedia.org\/wiki\/Line_level<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Line level audio signal voltage seems to vary between -1.5V .. +1.5V on iPod Touch (2nd generation) with maximum volume. Attached screenshot from oscilloscoped signal from iPod Touch playing 440hz sine wave .WAV file. See also http:\/\/en.wikipedia.org\/wiki\/Line_level<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,8,9],"tags":[],"class_list":["post-45","post","type-post","status-publish","format-standard","hentry","category-electronics","category-measured","category-oscilloscoped"],"_links":{"self":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/45","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=45"}],"version-history":[{"count":5,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/45\/revisions"}],"predecessor-version":[{"id":52,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/45\/revisions\/52"}],"wp:attachment":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=45"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=45"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=45"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}