{"id":21084,"date":"2025-07-08T02:46:29","date_gmt":"2025-07-07T19:46:29","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=21084"},"modified":"2025-07-10T09:35:05","modified_gmt":"2025-07-10T02:35:05","slug":"the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/","title":{"rendered":"Th\u1ebf n\u00e0o l\u00e0 \u00e2m ph\u1ea3n x\u1ea1? \u1ee8ng d\u1ee5ng c\u1ee7a \u00e2m ph\u1ea3n x\u1ea1 l\u00e0 g\u00ec?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/#Am_thanh_phan_xa_la_gi\" >\u00c2m thanh ph\u1ea3n x\u1ea1 l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/#Phan_xa_am_thanh_tot\" >Ph\u1ea3n x\u1ea1 \u00e2m thanh t\u1ed1t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/#Kem\" >K\u00e9m<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/#Vi_du_ve_cac_phan_xa_am_thanh_kem_nhu_tam_cao_su_dem_bot_vai_ni_tuong_tho_rem_nhung_%E2%80%A6\" >V\u00ed d\u1ee5 v\u1ec1 c\u00e1c ph\u1ea3n x\u1ea1 \u00e2m thanh k\u00e9m nh\u01b0 t\u1ea5m cao su, \u0111\u1ec7m b\u1ecdt, v\u1ea3i n\u1ec9, t\u01b0\u1eddng th\u00f4, r\u00e8m nhung, &#8230;<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/#Phan_biet_phan_xa_va_tieng_vang\" >Ph\u00e2n bi\u1ec7t ph\u1ea3n x\u1ea1 v\u00e0 ti\u1ebfng vang<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/#Ung_dung_phan_anh_trong_thuc_te\" >\u1ee8ng d\u1ee5ng ph\u1ea3n \u00e1nh trong th\u1ef1c t\u1ebf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/the-nao-la-am-phan-xa-ung-dung-cua-am-phan-xa-la-gi\/#Bai_tap_phan_xa_Echo_the_chat_7\" >B\u00e0i t\u1eadp ph\u1ea3n x\u1ea1 Echo th\u1ec3 ch\u1ea5t 7<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\" style=\"text-align: left\">Khi b\u1ea1n \u0111\u1ee9ng trong m\u1ed9t hang \u0111\u1ed9ng l\u1edbn v\u00e0 h\u00e9t to, th\u00ec b\u1ea1n s\u1ebd nghe th\u1ea5y ti\u1ebfng h\u00e9t c\u1ee7a m\u00ecnh. V\u1eady t\u1ea1i sao c\u00f3 m\u1ed9t gi\u1ecdng n\u00f3i t\u00f4i l\u1eb7p l\u1ea1i? Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 th\u1ebf l\u00e0 g\u00ec? V\u00e0 t\u00f4i c\u00f3 th\u1ec3 nghe th\u1ea5y ti\u1ebfng vang \u1edf \u0111\u00e2u? \u0110\u1ec3 tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi tr\u00ean, l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea1n l\u00e0m theo b\u00e0i h\u1ecdc? \u1ee8ng d\u1ee5ng c\u1ee7a \u00e2m thanh ph\u1ea3n x\u1ea1 l\u00e0 g\u00ec? <\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Am_thanh_phan_xa_la_gi\"><\/span>\u00c2m thanh ph\u1ea3n x\u1ea1 l\u00e0 g\u00ec? <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/am-phan-xa-10.jpg\" alt=\"H\u00ecnh \u1ea3nh minh h\u1ecda c\u1ee7a \u00e2m thanh ph\u1ea3n x\u1ea1. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<p dir=\"ltr\"><em>\u00c2m thanh ph\u1ea3n x\u1ea1 l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng s\u00f3ng khi lan ra b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac c\u1ee7a hai m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c thay \u0111\u1ed5i v\u00e0 tr\u1edf l\u1ea1i m\u00f4i tr\u01b0\u1eddng m\u00e0 n\u00f3 \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c. N\u00f3i c\u00e1ch kh\u00e1c, \u00e2m thanh \u0111\u00e3 tr\u1edf l\u1ea1i khi n\u00f3i \u0111\u1ebfn m\u1ed9t l\u00e1 ch\u1eafn.<\/em><\/p>\n<p dir=\"ltr\">Echo (ho\u1eb7c ph\u1ea3n c\u00f4ng, thanh) l\u00e0 ph\u1ea3n x\u1ea1 c\u1ee7a \u00e2m thanh (\u00e2m thanh ph\u1ea3n x\u1ea1) cho ng\u01b0\u1eddi nghe v\u1edbi \u0111\u1ed9 tr\u1ec5 sau \u00e2m thanh tr\u1ef1c ti\u1ebfp \u00edt nh\u1ea5t 115 gi\u00e2y. \u0110\u1ed9 tr\u1ec5 n\u00e0y t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi kho\u1ea3ng c\u00e1ch c\u1ee7a b\u1ec1 m\u1eb7t \u0111\u01b0\u1ee3c ph\u1ea3n x\u1ea1 t\u1eeb ngu\u1ed3n v\u00e0 ng\u01b0\u1eddi nghe. <\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phan_xa_am_thanh_tot\"><\/span>Ph\u1ea3n x\u1ea1 \u00e2m thanh t\u1ed1t <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/am-phan-xa-2.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a m\u1ed9t s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea3n chi\u1ebfu \u00e2m thanh t\u1ed1t. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet))\" width=\"800\"><\/p>\n<p dir=\"ltr\">\u0110\u1ed1i t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e2m thanh t\u1ed1t l\u00e0 v\u1eadt li\u1ec7u c\u1ee9ng, b\u1ec1 m\u1eb7t m\u1ecbn, ph\u1ea3n x\u1ea1 \u00e2m thanh t\u1ed1t nh\u01b0ng h\u1ea5p th\u1ee5 \u00e2m thanh k\u00e9m.<\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5 v\u1ec1 ph\u1ea3n x\u1ea1 \u00e2m thanh t\u1ed1t nh\u01b0: b\u1ec1 m\u1eb7t g\u01b0\u01a1ng, b\u1ec1 m\u1eb7t \u0111\u00e1 c\u1ea9m th\u1ea1ch, t\u1ea5m kim lo\u1ea1i, t\u01b0\u1eddng g\u1ea1ch, &#8230;<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Kem\"><\/span>K\u00e9m <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e2m thanh k\u00e9m l\u00e0 b\u1ec1 m\u1eb7t m\u1ec1m, x\u1ed1p, g\u1ed3 gh\u1ec1.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Vi_du_ve_cac_phan_xa_am_thanh_kem_nhu_tam_cao_su_dem_bot_vai_ni_tuong_tho_rem_nhung_%E2%80%A6\"><\/span>V\u00ed d\u1ee5 v\u1ec1 c\u00e1c ph\u1ea3n x\u1ea1 \u00e2m thanh k\u00e9m nh\u01b0 t\u1ea5m cao su, \u0111\u1ec7m b\u1ecdt, v\u1ea3i n\u1ec9, t\u01b0\u1eddng th\u00f4, r\u00e8m nhung, &#8230;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/am-phan-xa-3.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a m\u1ed9t s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 ti\u00eau c\u1ef1c k\u00e9m. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phan_biet_phan_xa_va_tieng_vang\"><\/span>Ph\u00e2n bi\u1ec7t ph\u1ea3n x\u1ea1 v\u00e0 ti\u1ebfng vang<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">S\u1ef1 gi\u1ed1ng nhau gi\u1eefa ph\u1ea3n x\u1ea1 v\u00e0 ti\u1ebfng vang: C\u1ea3 hai \u00e2m thanh l\u00e0 \u00e2m thanh khi g\u1eb7p c\u00e1c r\u00e0o c\u1ea3n ph\u1ea3n x\u1ea1 \u0111\u1ed1i v\u1edbi \u00e2m thanh th\u1ef1c t\u1ebf<\/p>\n<p dir=\"ltr\">S\u1ef1 kh\u00e1c bi\u1ec7t<\/p>\n<table style=\"border-collapse: collapse;width: 100.019%;height: 89.5455px\" border=\"1\">\n<tr style=\"height: 22.3864px\">\n<td style=\"width: 32.3053%;height: 22.3864px;border: 0.5px solid #4e4c50\"> <\/td>\n<td style=\"width: 32.3053%;text-align: center;height: 22.3864px;border: 0.5px solid #4e4c50\">Ph\u1ea3n x\u1ea1 <\/td>\n<td style=\"width: 32.3053%;text-align: center;height: 22.3864px;border: 0.5px solid #4e4c50\">Ti\u1ebfng vang <\/td>\n<\/tr>\n<tr style=\"height: 22.3864px\">\n<td style=\"width: 32.3053%;height: 22.3864px;border: 0.5px solid #4e4c50\">Cho c\u00e1c nh\u00e0 quan s\u00e1t<\/td>\n<td style=\"width: 32.3053%;height: 22.3864px;border: 0.5px solid #4e4c50;text-align: center\">C\u00f3 th\u1ec3 s\u1ebd nghe ho\u1eb7c kh\u00f4ng nghe th\u1ea5y <\/td>\n<td style=\"width: 32.3053%;height: 22.3864px;border: 0.5px solid #4e4c50;text-align: center\">\u0110\u00e3 nghe<\/td>\n<\/tr>\n<tr style=\"height: 44.7727px\">\n<td style=\"width: 32.3053%;height: 44.7727px;border: 0.5px solid #4e4c50\">Th\u1eddi gian \u00e2m thanh \u0111\u1ebfn tai nghe sau \u00e2m thanh tr\u1ef1c ti\u1ebfp (T)<\/td>\n<td style=\"width: 32.3053%;text-align: center;height: 44.7727px;border: 0.5px solid #4e4c50\">T&gt; 0<\/td>\n<td style=\"width: 32.3053%;text-align: center;height: 44.7727px;border: 0.5px solid #4e4c50\">T l\u1edbn h\u01a1n ho\u1eb7c b\u1eb1ng 1\/15 gi\u00e2y <\/td>\n<\/tr>\n<\/table>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ung_dung_phan_anh_trong_thuc_te\"><\/span>\u1ee8ng d\u1ee5ng ph\u1ea3n \u00e1nh trong th\u1ef1c t\u1ebf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Ki\u1ebfn th\u1ee9c th\u1ec3 ch\u1ea5t b\u1ea1n \u0111ang h\u1ecdc c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng cho cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. V\u00ec v\u1eady, hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e2m thanh \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong th\u1ef1c t\u1ebf, kh\u1ec9 m\u1eddi b\u1ea1n t\u00ecm hi\u1ec3u c\u00e1c v\u00ed d\u1ee5 d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Trong c\u00e1c b\u1ec7nh vi\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c tr\u1ed3ng nhi\u1ec1u c\u00e2y, c\u00e2y s\u1ebd ph\u1ea3n \u00e1nh \u00e2m thanh t\u1eeb giao th\u00f4ng, ti\u1ebfng \u1ed3n gi\u00fap b\u1ec7nh vi\u1ec7n y\u00ean t\u0129nh, kh\u00f4ng c\u00f3 \u00f4 nhi\u1ec5m ti\u1ebfng \u1ed3n.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/am-phan-xa-4.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a b\u1ec7nh vi\u1ec7n \u0111\u01b0\u1ee3c tr\u1ed3ng nhi\u1ec1u c\u00e2y \u1edf Singapore. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00e1c chuy\u00ean gia x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 s\u00e2u c\u1ee7a bi\u1ec3n d\u1ef1a tr\u00ean s\u00f3ng si\u00eau \u00e2m v\u00e0 nh\u1eadn s\u00f3ng ph\u1ea3n x\u1ea1 m\u00e0 t\u1eeb \u0111\u00f3 c\u00e1c chuy\u00ean gia c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u1ed9 s\u00e2u c\u1ee7a \u0111\u00e1y bi\u1ec3n.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/am-phan-xa-5.jpg\" alt=\"Minh h\u1ecda \u0111o \u0111\u1ed9 s\u00e2u c\u1ee7a \u0111\u00e1y bi\u1ec3n th\u00f4ng qua si\u00eau \u00e2m. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Gi\u1ed1ng nh\u01b0 c\u00e1c lo\u00e0i d\u01a1i, c\u00e1 heo c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t ra s\u00f3ng si\u00eau \u00e2m, sau \u0111\u00f3 c\u1ea3m th\u1ea5y s\u00f3ng \u0111\u1ec3 c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ecba h\u00ecnh xung quanh, nghe th\u1ea5y \u00e2m thanh c\u1ee7a \u0111\u1ed3ng lo\u1ea1i v\u00e0 ph\u00e1t hi\u1ec7n con m\u1ed3i.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/am-phan-xa-6.jpg\" alt=\"H\u00ecnh \u1ea3nh minh h\u1ecda c\u00e1 heo ph\u00e1t ra s\u00f3ng si\u00eau \u00e2m. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ngo\u00e0i ra, y h\u1ecdc c\u0169ng s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt si\u00eau \u00e2m \u0111\u1ec3 ki\u1ec3m tra t\u00ecnh tr\u1ea1ng c\u01a1 th\u1ec3. <\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/am-phan-xa-7.jpg\" alt=\"H\u00ecnh \u1ea3nh s\u1eed d\u1ee5ng si\u00eau \u00e2m \u0111\u1ec3 si\u00eau \u00e2m b\u1ee5ng cho b\u1ec7nh nh\u00e2n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"800\"><\/p>\n<p dir=\"ltr\">Xem th\u00eam: H\u00ecnh \u1ea3nh \u1ea3o l\u00e0 g\u00ec? S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa h\u00ecnh \u1ea3nh \u1ea3o v\u00e0 \u1ea3nh th\u1eadt<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_phan_xa_Echo_the_chat_7\"><\/span>B\u00e0i t\u1eadp ph\u1ea3n x\u1ea1 Echo th\u1ec3 ch\u1ea5t 7 <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">B\u1ea1n c\u00f3 t\u1ef1 tin r\u1eb1ng b\u1ea1n th\u00e0nh th\u1ea1o t\u1ea5t c\u1ea3 c\u00e1c ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 b\u00e0i h\u1ecdc n\u00e0y? H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi kh\u1ec9 v\u1edbi c\u00e1c b\u00e0i t\u1eadp c\u01a1 b\u1ea3n ph\u1ed5 bi\u1ebfn trong c\u00e1c b\u00e0i ki\u1ec3m tra li\u00ean quan \u0111\u1ebfn ph\u1ea3n x\u1ea1 \u00e2m thanh d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 xem n\u01a1i b\u1ea1n hi\u1ec3u.<\/p>\n<p dir=\"ltr\">C\u00e2u h\u1ecfi C1: B\u1ea1n \u0111\u00e3 nghe ti\u1ebfng Echo \u1edf \u0111\u00e2u? T\u1ea1i sao b\u1ea1n nghe th\u1ea5y ti\u1ebfng vang \u0111\u00f3?<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: T\u00f4i \u0111\u00e3 nghe th\u1ea5y ti\u1ebfng vang trong mi\u1ec7ng gi\u1ebfng, trong hang, trong h\u1ed9i tr\u01b0\u1eddng v\u1edbi nh\u1eefng b\u1ee9c t\u01b0\u1eddng r\u1ed9ng \u0111\u01b0\u1ee3c bao quanh. \u1ede nh\u1eefng n\u01a1i t\u00f4i nghe th\u1ea5y ti\u1ebfng vang th\u1ef1c s\u1ef1.<\/p>\n<p dir=\"ltr\">C\u00e2u h\u1ecfi C2: T\u1ea1i sao ch\u00fang ta th\u01b0\u1eddng nghe th\u1ea5y \u00e2m thanh l\u1edbn h\u01a1n khi nghe th\u1ea5y \u00e2m thanh \u0111\u00f3 ngo\u00e0i tr\u1eddi?<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: B\u1edfi v\u00ec trong c\u00e1c ph\u00f2ng c\u00f3 khu v\u1ef1c nh\u1ecf v\u00e0 kh\u00e9p k\u00edn, \u00e2m thanh ph\u00e1t ra v\u00e0 ph\u1ea3n x\u1ea1 \u00e2m thanh truy\u1ec1n \u0111\u1ebfn tai c\u00f9ng m\u1ed9t l\u00fac (trong kho\u1ea3ng th\u1eddi gian ng\u1eafn h\u01a1n 115 gi\u00e2y), \u00e2m thanh to h\u01a1n so v\u1edbi khi ch\u00fang ta nghe th\u1ea5y \u00e2m thanh \u0111\u00f3 ngo\u00e0i tr\u1eddi.<\/p>\n<p dir=\"ltr\">C\u00e2u C3: Khi n\u00f3i to trong ph\u00f2ng r\u1ea5t l\u1edbn, ti\u1ebfng vang. Nh\u01b0ng n\u00f3i to trong m\u1ed9t c\u0103n ph\u00f2ng nh\u1ecf kh\u00f4ng nghe th\u1ea5y ti\u1ebfng vang.<\/p>\n<p dir=\"ltr\">\u1ede ph\u00f2ng n\u00e0o c\u00f3 \u00e2m thanh ph\u1ea3n chi\u1ebfu?<\/p>\n<p dir=\"ltr\">T\u00ednh kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t t\u1eeb \u200b\u200bloa \u0111\u1ebfn t\u01b0\u1eddng \u0111\u1ec3 nghe ti\u1ebfng vang. Bi\u1ebft v\u1eadn t\u1ed1c \u00e2m trong kh\u00f4ng kh\u00ed l\u00e0 340 m\/s.<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">Trong c\u1ea3 hai ph\u00f2ng, c\u00f3 m\u1ed9t \u00e2m thanh ph\u1ea3n chi\u1ebfu. Khi n\u00f3i trong ph\u00f2ng, n\u00f3 nh\u1ecf nh\u01b0ng v\u1eabn c\u00f3 m\u1ed9t h\u00ecnh \u1ea3nh ph\u1ea3n chi\u1ebfu t\u1eeb c\u00e1c b\u1ee9c t\u01b0\u1eddng trong ph\u00f2ng \u0111\u1ebfn tai nh\u01b0ng v\u1eabn kh\u00f4ng th\u1ec3 nghe th\u1ea5y ti\u1ebfng vang v\u00ec s\u1ef1 ph\u1ea3n chi\u1ebfu t\u1eeb t\u01b0\u1eddng ph\u00f2ng v\u00e0 \u00e2m thanh c\u1ee7a \u00e2m thanh truy\u1ec1n \u0111\u1ebfn tai c\u00f9ng l\u00fac ho\u1eb7c kho\u1ea3ng th\u1eddi gian kh\u00e1c bi\u1ec7t \u00e2m thanh \u0111\u1ebfn tai \u0111\u1ebfn 115 gi\u00e2y.<\/p>\n<p dir=\"ltr\">B\u1edfi v\u00ec \u00e2m thanh ph\u00e1t ra t\u1eeb ngu\u1ed3n \u00e2m thanh (b\u1eb1ng kho\u1ea3ng c\u00e1ch t\u1eeb ng\u01b0\u1eddi \u0111\u1ebfn t\u01b0\u1eddng) \u0111\u1ebfn t\u01b0\u1eddng, v\u00e0 sau \u0111\u00f3 b\u1ee9c t\u01b0\u1eddng ph\u1ea3n x\u1ea1 v\u00e0 truy\u1ec1n \u00e2m thanh \u0111\u1ebfn tai ng\u01b0\u1eddi nghe, \u00e2m thanh ph\u1ea3n x\u1ea1 \u0111i nhi\u1ec1u h\u01a1n \u0111\u1ebfn kho\u1ea3ng c\u00e1ch c\u1ee7a con ng\u01b0\u1eddi. <\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, \u00e2m \u0111\u00e3 \u0111i m\u1ed9t d\u00f2ng S1 = 2 v\u00e0 sau \u0111\u00f3 quay tr\u1edf l\u1ea1i tai.<\/p>\n<p dir=\"ltr\">\u0110\u1ec3 c\u1ed9ng h\u01b0\u1edfng, Echo n\u1eb1m \u1edf tai ph\u1ea3i ch\u1eadm h\u01a1n so v\u1edbi truy\u1ec1n tr\u1ef1c ti\u1ebfp \u00edt nh\u1ea5t 115 gi\u00e2y.<\/p>\n<p dir=\"ltr\">Kho\u1ea3ng c\u00e1ch truy\u1ec1n v\u00e0 truy\u1ec1n trong 115 gi\u00e2y l\u00e0:<\/p>\n<p dir=\"ltr\">S1 = VT = 340.115 = 22,67 m<\/p>\n<p dir=\"ltr\">B\u1edfi v\u00ec S1 = 2S, kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t gi\u1eefa ng\u01b0\u1eddi n\u00f3i v\u00e0 t\u01b0\u1eddng \u0111\u1ec3 nghe ti\u1ebfng vang l\u00e0:<\/p>\n<p dir=\"ltr\">D = s = s12 = 22,672 = 11,33 m<\/p>\n<p dir=\"ltr\">C\u00e1c v\u00e2y c\u1ed9ng h\u01b0\u1edfng khi ch\u00fang ta nghe th\u1ea5y \u00e2m thanh ph\u1ea3n x\u1ea1 v\u1edbi \u00e2m thanh \u00edt nh\u1ea5t 115 gi\u00e2y.<\/p>\n<p dir=\"ltr\">C\u00e2u C4: Trong c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng sau, \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o ph\u1ea3n \u00e1nh \u00e2m thanh t\u1ed1t, \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o ph\u1ea3n \u00e1nh k\u00e9m? B\u1ecdt, b\u1ec1 m\u1eb7t g\u01b0\u01a1ng, \u00e1o len, m\u1eb7t \u0111\u00e1 c\u1ea9m th\u1ea1ch, gh\u1ebf \u0111\u1ec7m b\u1ecdt, t\u1ea5m kim lo\u1ea1i, cao su x\u1ed1p, t\u01b0\u1eddng g\u1ea1ch.<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: <\/p>\n<p dir=\"ltr\">Ph\u1ea3n x\u1ea1 \u00e2m thanh t\u1ed1t: b\u1ec1 m\u1eb7t g\u01b0\u01a1ng, \u0111\u00e1 c\u1ea9m th\u1ea1ch, t\u1ea5m kim lo\u1ea1i, t\u01b0\u1eddng g\u1ea1ch.<\/p>\n<p dir=\"ltr\">Ph\u1ea3n x\u1ea1 \u00e2m thanh k\u00e9m: B\u1ecdt, \u00e1o len, cao su x\u1ed1p, \u0111\u1ec7m b\u1ecdt.<\/p>\n<p dir=\"ltr\">C\u00e2u h\u1ecfi C5: Trong nhi\u1ec1u ph\u00f2ng h\u00f2a nh\u1ea1c, ph\u00f2ng b\u00f3ng, ph\u00f2ng thu \u00e2m, m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng l\u00e0m nh\u1eefng b\u1ee9c t\u01b0\u1eddng th\u00f4 v\u00e0 treo r\u00e8m nhung \u0111\u1ec3 gi\u1ea3m ti\u1ebfng vang. Vui l\u00f2ng gi\u1ea3i th\u00edch t\u1ea1i sao?<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">Trong c\u00e1c ph\u00f2ng c\u00f3 t\u01b0\u1eddng th\u00f4 v\u00e0 r\u00e8m nhung treo, nh\u1eefng ph\u1ea3n x\u1ea1 k\u00e9m s\u1ebd l\u00e0m gi\u1ea3m ho\u1eb7c m\u1ea5t ti\u1ebfng vang \u0111\u1ec3 gi\u00fap \u00e2m thanh trong ch\u00fang r\u00f5 r\u00e0ng h\u01a1n v\u00e0 to h\u01a1n.<\/p>\n<p dir=\"ltr\">C\u00e2u C6: Khi b\u1ea1n mu\u1ed1n nghe r\u00f5 h\u01a1n, m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng \u0111\u1eb7t tay, g\u1ea7n tai, \u0111\u1ed3ng th\u1eddi h\u01b0\u1edbng t\u1edbi ngu\u1ed3n \u00e2m thanh. Vui l\u00f2ng gi\u1ea3i th\u00edch t\u1ea1i sao?<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">B\u1ea5t c\u1ee9 khi n\u00e0o b\u1ea1n mu\u1ed1n nghe r\u00f5 h\u01a1n, m\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng \u0111\u1eb7t tay tr\u1edf l\u1ea1i, g\u1ea7n tai nh\u01b0 th\u1ebf s\u1ebd gi\u00fap nghe th\u1ea5y \u00e2m thanh l\u1edbn v\u00e0 r\u00f5 r\u00e0ng h\u01a1n.<\/p>\n<p dir=\"ltr\">C\u00e2u h\u1ecfi C7: M\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng s\u1eed d\u1ee5ng ph\u1ea3n x\u1ea1 si\u00eau \u00e2m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 s\u00e2u c\u1ee7a bi\u1ec3n.<\/p>\n<p dir=\"ltr\">Gi\u1ea3 s\u1eed t\u00e0u ph\u00e1t ra si\u00eau \u00e2m v\u00e0 thu \u0111\u01b0\u1ee3c ph\u1ea3n x\u1ea1 c\u1ee7a n\u00f3 t\u1eeb bi\u1ec3n sau 1 gi\u00e2y (hi\u1ec3n th\u1ecb b\u00ean d\u01b0\u1edbi). T\u00ednh to\u00e1n g\u1ea7n v\u1edbi \u0111\u1ed9 s\u00e2u c\u1ee7a \u0111\u00e1y bi\u1ec3n, bi\u1ebft v\u1eadn t\u1ed1c si\u00eau \u00e2m trong n\u01b0\u1edbc l\u00e0 1500m\/s?<\/p>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">T\u1ed1c \u0111\u1ed9 1500 m\/s \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 trong m\u1ed9t si\u00eau \u00e2m th\u1ee9 hai \u0111\u01b0\u1ee3c truy\u1ec1n 1500 m.<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, ch\u00fang t\u00f4i c\u00f3 kho\u1ea3ng c\u00e1ch si\u00eau \u00e2m v\u00e0 tr\u1edf l\u1ea1i trong 1 gi\u00e2y l\u00e0 S = 1500 m.<\/p>\n<p dir=\"ltr\">\u00c2m thanh truy\u1ec1n t\u1eeb t\u00e0u sang \u0111\u00e1y bi\u1ec3n trong 12 = 0,5s.<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, \u0111\u1ed9 s\u00e2u c\u1ee7a bi\u1ec3n l\u00e0:<\/p>\n<p dir=\"ltr\">H = 1500.0.5 = 750 m<\/p>\n<p dir=\"ltr\">C\u00e2u h\u1ecfi C8: \u0110i\u1ec1u n\u00e0o sau \u0111\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e2m thanh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng?<\/p>\n<ol>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Tr\u1ed3ng c\u00e2y xung quanh b\u1ec7nh vi\u1ec7n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 s\u00e2u c\u1ee7a bi\u1ec3n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u00e0m \u0111\u1ed3 ch\u01a1i &#8220;d\u00e2y \u0111i\u1ec7n tho\u1ea1i&#8221;.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">L\u00e0m b\u00eca t\u01b0\u1eddng, nhung.<\/p>\n<\/li>\n<\/ol>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p:<\/p>\n<p dir=\"ltr\">Ch\u1ecdn c\u00e2u tr\u1ea3 l\u1eddi B. X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 s\u00e2u c\u1ee7a bi\u1ec3n. <\/p>\n<p dir=\"ltr\">Trong tr\u01b0\u1eddng h\u1ee3p trong hai c\u00e2u A v\u00e0 B, n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c ph\u1ea3n x\u1ea1 \u00e2m thanh ho\u1eb7c thay \u0111\u1ed5i h\u01b0\u1edbng c\u1ee7a \u00e2m thanh th\u00e0nh tai.<\/p>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng trong c\u00e2u d, n\u00f3 kh\u00f4ng li\u00ean quan \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n x\u1ea1 \u00e2m thanh.<\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn <\/p>\n<p dir=\"ltr\">Hy v\u1ecdng r\u1eb1ng, v\u1edbi b\u00e0i h\u1ecdc chung v\u1ec1 \u00e2m thanh ph\u1ea3n chi\u1ebfu m\u00e0 kh\u1ec9 chia s\u1ebb s\u1ebd gi\u00fap b\u1ea1n xem x\u00e9t chi ti\u1ebft \u1edf d\u1ea1ng tr\u00ean. Ngo\u00e0i ra, h\u00e3y l\u00e0m theo ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 bi\u1ebft nh\u1eefng b\u00e0i h\u1ecdc h\u1eefu \u00edch h\u01a1n.<\/p>\n<p dir=\"ltr\">N\u1ebfu b\u1ea1n t\u00ecm th\u1ea5y b\u00e0i vi\u1ebft hay, b\u1ea1n c\u00f3 th\u1ec3 nh\u1ea5p v\u00e0o n\u00fat &#8220;Chia s\u1ebb b\u00e0i vi\u1ebft&#8221; b\u00ean d\u01b0\u1edbi \u0111\u1ec3 b\u1ea1n b\u00e8 \u0111\u1ecdc b\u00e0i vi\u1ebft n\u00e0y. H\u00e3y \u0111\u1ec3 kh\u1ec9 \u0111i c\u00f9ng b\u1ea1n trong su\u1ed1t qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp n\u00e0y!<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi b\u1ea1n \u0111\u1ee9ng trong m\u1ed9t hang \u0111\u1ed9ng l\u1edbn v\u00e0 h\u00e9t to, th\u00ec b\u1ea1n s\u1ebd nghe th\u1ea5y ti\u1ebfng h\u00e9t c\u1ee7a m\u00ecnh. V\u1eady t\u1ea1i sao c\u00f3 m\u1ed9t gi\u1ecdng n\u00f3i t\u00f4i l\u1eb7p l\u1ea1i? Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 th\u1ebf l\u00e0 g\u00ec? V\u00e0 t\u00f4i c\u00f3 th\u1ec3 nghe th\u1ea5y ti\u1ebfng vang \u1edf \u0111\u00e2u? \u0110\u1ec3 tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi tr\u00ean, l\u00e0m&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-21084","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=21084"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21084\/revisions"}],"predecessor-version":[{"id":26168,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/21084\/revisions\/26168"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=21084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=21084"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=21084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}