{"id":110088,"date":"2015-08-04T03:00:00","date_gmt":"2015-08-04T00:00:00","guid":{"rendered":"http:\/\/www.fyysika.ee\/?guid=8a4624c58282bfb6e838915a97cbb0df"},"modified":"2015-08-04T03:00:00","modified_gmt":"2015-08-04T00:00:00","slug":"sound-resonance-in-pipes-with-discrete-fourier-transform","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=110088","title":{"rendered":"Sound resonance in pipes with discrete Fourier transform"},"content":{"rendered":"<p>Sound resonance in pipes is investigated using a readily available setup consisting of a pipe,<br \/>\nloudspeaker, microphone, and laptop. Discrete Fourier transform is used to extract the amplitude and<br \/>\nphase spectra from the recorded sound enabling determination of locations and shapes of resonance<br \/>\npeaks accurately. Either white noise signal or sharp pulse signal is used as an excited input sound<br \/>\nsignal. Both have broad frequency spectra and the difference between them is explored. The shapes of<br \/>\nthe amplitude and phase spectra are found to be well fitted to the predicted shapes. The pipe is<br \/>\neither closed at both ends, closed at only one end, or open at both ends. The speed of sound and the<br \/>\neffective location of reflection at the open end are in excellent agreement with theory.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sound resonance in pipes is investigated using a readily available setup consisting of a pipe,<br \/>\nloudspeaker, microphone, and laptop. Discrete Fourier transform is used to extract the amplitude and<br \/>\nphase spectra from the recorded sound enabling determi&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[178],"tags":[],"class_list":{"0":"post-110088","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-rss-fuusikaharidus","7":"entry"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/110088","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=110088"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/110088\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=110088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=110088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=110088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}