{"id":51,"date":"2022-02-20T05:01:00","date_gmt":"2022-02-20T05:01:00","guid":{"rendered":"https:\/\/thuyetminh.explorascience.vn\/?p=51"},"modified":"2022-03-10T05:12:39","modified_gmt":"2022-03-10T05:12:39","slug":"mo-hinh-nhin-am-thanh","status":"publish","type":"post","link":"https:\/\/thuyetminh.explorascience.vn\/?p=51","title":{"rendered":"M\u00f4 h\u00ecnh Nh\u00ecn \u00e2m thanh"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"51\" class=\"elementor elementor-51\" data-elementor-settings=\"[]\">\n\t\t\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-270b4c8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"270b4c8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8920181\" data-id=\"8920181\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-079964c elementor-widget elementor-widget-heading\" data-id=\"079964c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.6 - 28-02-2022 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">M\u00f4 h\u00ecnh Nh\u00ecn \u00e2m thanh <\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3330ffe elementor-widget elementor-widget-wp-widget-media_audio\" data-id=\"3330ffe\" data-element_type=\"widget\" data-widget_type=\"wp-widget-media_audio.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<audio class=\"wp-audio-shortcode\" id=\"audio-51-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/03\/2021-Nhin-am-thanh.mp3?_=1\" \/><source type=\"audio\/mpeg\" src=\"https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/03\/2021-Nhin-am-thanh.mp3?_=1\" \/><a href=\"https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/03\/2021-Nhin-am-thanh.mp3\">https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/03\/2021-Nhin-am-thanh.mp3<\/a><\/audio>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9da00e0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9da00e0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-403ce4a\" data-id=\"403ce4a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-78439cd elementor-widget elementor-widget-image\" data-id=\"78439cd\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.6 - 28-02-2022 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"879\" height=\"766\" src=\"https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2A.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2A.jpg 879w, https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2A-300x261.jpg 300w, https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2A-768x669.jpg 768w\" sizes=\"auto, (max-width: 879px) 100vw, 879px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7b06352 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7b06352\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-42be724\" data-id=\"42be724\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8f9f821 elementor-widget elementor-widget-text-editor\" data-id=\"8f9f821\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.5.6 - 28-02-2022 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#818a91;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#818a91;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>\u00c2m thanh th\u01b0\u1eddng \u0111\u01b0\u1ee3c nghe b\u1eb1ng tai, c\u00f3 l\u1ebd ta ch\u01b0a t\u1eebng ngh\u0129 n\u00f3 c\u00f3 th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c b\u1eb1ng m\u1eaft th\u01b0\u1eddng. M\u00f4 h\u00ecnh nh\u00ecn \u00e2m thanh &#8211; gi\u00fap b\u1ea1n nh\u00ecn th\u1ea5y ti\u1ebfng n\u00f3i c\u1ee7a ch\u00ednh m\u00ecnh.<\/p><p>\u00c2m thanh ph\u00e1t ra (s\u00f3ng \u00e2m) \u0111\u01b0\u1ee3c micro thu l\u1ea1i, chuy\u1ec3n th\u00e0nh dao \u0111\u1ed9ng \u0111i\u1ec7n v\u00e0 \u2018v\u1ebd\u201d l\u1ea1i tr\u00ean t\u01b0\u1eddng b\u1eb1ng laser. Khi ta n\u00f3i to nh\u1ecf, t\u0103ng gi\u1ea3m cao \u0111\u1ed9 th\u00ec h\u00ecnh \u1ea3nh \u00e2m thanh c\u0169ng thay \u0111\u1ed5i. \u0110\u00f3 ch\u00ednh l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 b\u1ed9 n\u00e3o nh\u1eadn ra ti\u1ebfng n\u00f3i, \u00e2m nh\u1ea1c hay ti\u1ebfng \u1ed3n. C\u00e1c thi\u1ebft b\u1ecb nh\u1eadn d\u1ea1ng ti\u1ebfng n\u00f3i, phi\u00ean d\u1ecbch sang ng\u00f4n ng\u1eef kh\u00e1c c\u0169ng \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng theo nguy\u00ean l\u00fd n\u00e0y.<\/p><p>H\u01a1n n\u1eefa, khi 2 ng\u01b0\u1eddi c\u00f9ng \u1ea5n n\u00fat v\u00e0 n\u00f3i v\u00e0o micro, \u0111\u00e8n laser s\u1ebd qu\u00e9t theo hai tr\u1ee5c ngang, d\u1ecdc theo \u00e2m thanh v\u00e0 v\u1ebd ra m\u1ed9t \u0111\u01b0\u1eddng cong \u0111\u1eb7c bi\u1ec7t &#8211; \u0111\u01b0\u1eddng Lissajous, n\u00f3 cho th\u1ea5y s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 t\u1ea7n s\u1ed1 v\u00e0 pha c\u1ee7a 2 ngu\u1ed3n s\u00f3ng \u00e2m. \u0110\u1eb7c bi\u1ec7t v\u1edbi nh\u1eefng \u00e2m thanh ph\u00f9 h\u1ee3p, s\u00f3ng \u00e2m c\u00f3 th\u1ec3 v\u1ebd n\u00ean nh\u1eefng hoa v\u0103n \u0111\u1eb9p m\u1eaft.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dba2258 elementor-widget elementor-widget-image\" data-id=\"dba2258\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"754\" src=\"https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2B-1024x754.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2B-1024x754.jpg 1024w, https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2B-300x221.jpg 300w, https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2B-768x566.jpg 768w, https:\/\/thuyetminh.explorascience.vn\/wp-content\/uploads\/2022\/02\/2021MH2B.jpg 1051w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>M\u00f4 h\u00ecnh Nh\u00ecn \u00e2m thanh \u00c2m thanh th\u01b0\u1eddng \u0111\u01b0\u1ee3c nghe b\u1eb1ng tai, c\u00f3 l\u1ebd ta ch\u01b0a t\u1eebng ngh\u0129 n\u00f3 c\u00f3 th\u1ec3 quan s\u00e1t \u0111\u01b0\u1ee3c b\u1eb1ng m\u1eaft th\u01b0\u1eddng. M\u00f4 h\u00ecnh nh\u00ecn \u00e2m thanh &#8211; gi\u00fap b\u1ea1n nh\u00ecn th\u1ea5y ti\u1ebfng n\u00f3i c\u1ee7a ch\u00ednh m\u00ecnh. \u00c2m thanh ph\u00e1t ra (s\u00f3ng \u00e2m) \u0111\u01b0\u1ee3c micro thu l\u1ea1i, chuy\u1ec3n th\u00e0nh dao &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/thuyetminh.explorascience.vn\/?p=51\"> <span class=\"screen-reader-text\">M\u00f4 h\u00ecnh Nh\u00ecn \u00e2m thanh<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-51","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=\/wp\/v2\/posts\/51","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=51"}],"version-history":[{"count":7,"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=\/wp\/v2\/posts\/51\/revisions"}],"predecessor-version":[{"id":64,"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=\/wp\/v2\/posts\/51\/revisions\/64"}],"wp:attachment":[{"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=51"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=51"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thuyetminh.explorascience.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=51"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}