{"id":5620,"date":"2021-11-20T09:36:35","date_gmt":"2021-11-20T02:36:35","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=5620"},"modified":"2021-11-20T12:41:10","modified_gmt":"2021-11-20T05:41:10","slug":"vi-sao-tuong-hoi-am-co-the-truyen-am-thanh","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-tuong-hoi-am-co-the-truyen-am-thanh\/","title":{"rendered":"V\u00ec sao t\u01b0\u1eddng h\u1ed3i \u00e2m c\u00f3 th\u1ec3 truy\u1ec1n \u00e2m thanh?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Thi\u00ean \u0110\u00e0n \u1edf B\u1eafc Kinh, ch\u1eb3ng nh\u1eefng n\u1ed5i ti\u1ebfng th\u1ebf gi\u1edbi v\u00ec ngh\u1ec7 thu\u1eadt ki\u1ebfn tr\u00fac trang nghi\u00eam h\u00f9ng v\u0129 c\u1ee7a n\u00f3, m\u00e0 \u0111i\u1ec1u h\u1ea5p d\u1eabn du kh\u00e1ch c\u00f2n l\u00e0 \u1edf \u0111\u00f3 c\u00f3 b\u1ee9c t\u01b0\u1eddng h\u1ed3i \u00e2m v\u00e0 h\u00f2n \u0111\u00e1 ba \u00e2m h\u1ebft s\u1ee9c k\u00ec l\u1ea1. Ai \u0111\u00e3 \u0111\u1ebfn Thi\u00ean \u0110\u00e0n \u0111\u1ec1u kh\u00f4ng ng\u1edbt l\u1eddi tr\u1ea7m tr\u1ed3 kinh ng\u1ea1c v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng truy\u1ec1n \u00e2m thanh k\u00ec di\u1ec7u c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fang ta bi\u1ebft r\u1eb1ng, khi n\u00f3i chuy\u1ec7n h\u1eb1ng ng\u00e0y, c\u00e1ch nhau n\u0103m, s\u00e1u m\u00e9t l\u00e0 \u0111\u00e3 nghe kh\u00f4ng r\u00f5 r\u1ed3i. V\u1eady m\u00e0 \u0111\u1ee9ng \u1edf m\u1ed9t ph\u00eda t\u01b0\u1eddng bao c\u1ee7a t\u01b0\u1eddng h\u1ed3i \u00e2m Thi\u00ean \u0110\u00e0n c\u1ea5t ti\u1ebfng n\u00f3i kh\u1ebd, ng\u01b0\u1eddi \u1edf c\u1ea1nh b\u1ee9c t\u01b0\u1eddng ph\u00eda \u0111\u1ed1i di\u1ec7n bao gi\u1edd c\u0169ng c\u00f3 th\u1ec3 nghe r\u00f5 m\u1ed3n m\u1ed9t. Gi\u1eefa h\u1ecd v\u1edbi nhau xa c\u00e1ch t\u1edbi h\u01a1n 50 m kia \u0111\u1ea5y! L\u1ea1i c\u00f2n chuy\u1ec7n kinh ng\u1ea1c h\u01a1n: n\u1ebfu \u0111\u1ee9ng tr\u00ean h\u00f2n \u0111\u00e1 ba \u00e2m \u1edf trung t\u00e2m b\u1ee9c t\u01b0\u1eddng h\u1ed3i \u00e2m v\u1ed7 tay m\u1ed9t c\u00e1i, b\u1ea1n c\u00f3 th\u1ec3 nghe th\u1ea5y li\u1ec1n m\u1ed9t l\u00fac hai ba ti\u1ebfng v\u1ed7 tay. V\u00ec sao l\u1ea1i c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng truy\u1ec1n \u00e2m thanh k\u00ec di\u1ec7u n\u00e0y nh\u1ec9?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00f3 l\u00e0 nh\u1edd s\u1ef1 gi\u00fap \u0111\u1ee1 c\u1ee7a h\u1ed3i \u00e2m \u0111\u1ea5y! Vi\u00ean \u0111\u00e1 ba \u00e2m v\u1eeba \u0111\u00fang n\u1eb1m tr\u00ean t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n c\u1ee7a b\u1ee9c t\u01b0\u1eddng bao quanh t\u01b0\u1eddng h\u1ed3i \u00e2m, v\u00ec v\u1eady \u00e2m thanh ph\u00e1t ra tr\u00ean vi\u00ean \u0111\u00e1 ba \u00e2m s\u1ebd truy\u1ec1n \u0111\u1ed3ng \u0111\u1ec1u \u0111\u1ebfn c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a t\u01b0\u1eddng bao v\u00e0 b\u1ecb t\u01b0\u1eddng bao ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i c\u0169ng \u0111\u1ec1u \u0111i qua t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n, cho n\u00ean \u0111\u1ee9ng tr\u00ean vi\u00ean \u0111\u00e1 ba \u00e2m c\u00f3 th\u1ec3 nghe r\u1ea5t r\u00f5 ti\u1ebfng v\u1ecdng l\u1ea1i. Ti\u1ebfng v\u1ecdng sau khi ph\u1ea3n x\u1ea1 \u0111i qua t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n, l\u1ea1i ti\u1ebfp t\u1ee5c truy\u1ec1n \u0111i theo b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n. Khi ch\u00fang \u0111\u1eadp v\u00e0o t\u01b0\u1eddng bao \u0111\u1ed1i di\u1ec7n l\u1ea1i b\u1ecb ph\u1ea3n x\u1ea1 tr\u1edf l\u1ea1i. V\u00ec th\u1ebf ch\u00fang ta li\u1ec1n nghe th\u1ea5y ti\u1ebfng v\u1ecdng th\u1ee9 hai, th\u1ee9 ba.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">G\u1ea1ch x\u00e2y t\u01b0\u1eddng h\u1ed3i \u00e2m \u1edf Thi\u00ean \u0110\u00e0n c\u1ee9ng ch\u1eafc v\u00e0 tr\u01a1n tru, l\u00e0 m\u1ed9t v\u1eadt ph\u1ea3n x\u1ea1 \u00e2m thanh r\u1ea5t t\u1ed1t. Nh\u01b0 \u0111\u00e3 tr\u00ecnh b\u00e0y trong h\u00ecnh v\u1ebd: khi m\u1ed9t ng\u01b0\u1eddi \u0111\u1ee9ng n\u00f3i t\u1ea1i \u0111i\u1ec3m A \u1edf m\u1ed9t ph\u00eda c\u1ee7a t\u01b0\u1eddng bao, \u00e2m thanh s\u1ebd theo t\u01b0\u1eddng bao truy\u1ec1n \u0111\u1ebfn \u0111i\u1ec3m 1, r\u1ed3i t\u1eeb \u0111i\u1ec3m 1 ph\u1ea3n x\u1ea1 ra, men theo t\u01b0\u1eddng bao truy\u1ec1n \u0111\u1ebfn \u0111i\u1ec3m 2, l\u1ea1i l\u1ea7n l\u01b0\u1ee3t \u0111\u1ebfn c\u00e1c v\u1ecb tr\u00ed \u0111i\u1ec3m 3, \u0111i\u1ec3m 4 v.v., sau c\u00f9ng \u0111\u1ebfn \u0111i\u1ec3m B \u1edf m\u1ed9t ph\u00eda kia c\u1ee7a t\u01b0\u1eddng h\u1ed3i \u00e2m. Do t\u01b0\u1eddng g\u1ea1ch h\u1ea5p thu \u00e2m thanh r\u1ea5t \u00edt, cho n\u00ean \u00e2m thanh kh\u00f4ng ng\u1eebng b\u1ecb ph\u1ea3n x\u1ea1 tr\u00ean t\u01b0\u1eddng bao, kh\u00f4ng gi\u1ed1ng nh\u01b0 khi truy\u1ec1n trong kh\u00f4ng kh\u00ed d\u1ec5 b\u1ecb t\u1ea3n ra, suy gi\u1ea3m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c2m thanh ph\u00e1t ra t\u1eeb \u0111i\u1ec3m A, tuy \u0111\u00e3 truy\u1ec1n \u0111i m\u1ed9t \u0111o\u1ea1n \u0111\u01b0\u1eddng r\u1ea5t d\u00e0i, song khi \u0111\u1ebfn \u0111i\u1ec3m B v\u1eabn nghe \u0111\u01b0\u1ee3c r\u1ea5t r\u00f5, c\u00f3 v\u1ebb nh\u01b0 \u00e2m thanh \u0111\u00f3 truy\u1ec1n t\u1eeb \u0111i\u1ec3m C \u1edf g\u1ea7n b\u00ean t\u1edbi v\u1eady.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eeb kh\u00f3a: Vi\u00ean \u0111\u00e1 ba \u00e2m;T\u01b0\u1eddng h\u1ed3i \u00e2m; Ti\u1ebfng v\u1ecdng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Thi\u00ean \u0110\u00e0n \u1edf B\u1eafc Kinh, ch\u1eb3ng nh\u1eefng n\u1ed5i ti\u1ebfng th\u1ebf gi\u1edbi v\u00ec ngh\u1ec7 thu\u1eadt ki\u1ebfn tr\u00fac trang nghi\u00eam h\u00f9ng v\u0129 c\u1ee7a n\u00f3, m\u00e0 \u0111i\u1ec1u h\u1ea5p d\u1eabn du kh\u00e1ch c\u00f2n l\u00e0 \u1edf \u0111\u00f3 c\u00f3 b\u1ee9c t\u01b0\u1eddng h\u1ed3i \u00e2m v\u00e0 h\u00f2n \u0111\u00e1 ba \u00e2m h\u1ebft s\u1ee9c k\u00ec l\u1ea1. Ai \u0111\u00e3 \u0111\u1ebfn Thi\u00ean \u0110\u00e0n \u0111\u1ec1u kh\u00f4ng ng\u1edbt l\u1eddi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,7],"tags":[],"class_list":["post-5620","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=5620"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/5620\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=5620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=5620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=5620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}