{"id":43780,"date":"2023-04-26T01:25:34","date_gmt":"2023-04-26T06:25:34","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-a-transducer-in-audio\/"},"modified":"2025-01-21T07:28:28","modified_gmt":"2025-01-21T12:28:28","slug":"what-is-a-transducer-in-audio","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-a-transducer-in-audio\/","title":{"rendered":"Gi\u1ea3i M\u00e3 Transducer: Linh H\u1ed3n \u00c2m Thanh"},"content":{"rendered":"<p>\u00c2m thanh, m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi s\u1ef1 rung \u0111\u1ed9ng v\u00e0 lan truy\u1ec1n d\u01b0\u1edbi d\u1ea1ng s\u00f3ng.  \u0110\u1ec3 ch\u00fang ta c\u00f3 th\u1ec3 nghe \u0111\u01b0\u1ee3c \u00e2m thanh \u0111\u00f3, ho\u1eb7c ghi l\u1ea1i v\u00e0 ph\u00e1t l\u1ea1i, c\u1ea7n c\u00f3 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1eeb d\u1ea1ng n\u00e0y sang d\u1ea1ng kh\u00e1c. Thi\u1ebft b\u1ecb \u0111\u00f3 ch\u00ednh l\u00e0 transducer, v\u00e0 trong l\u0129nh v\u1ef1c \u00e2m thanh, n\u00f3 \u0111\u00f3ng m\u1ed9t vai tr\u00f2 v\u00f4 c\u00f9ng quan tr\u1ecdng.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a transducer \u00e2m thanh<\/h3>\n<p>Transducer \u00e2m thanh ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng. C\u1ee5 th\u1ec3 h\u01a1n, n\u00f3 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1eeb d\u1ea1ng c\u01a1 h\u1ecdc (rung \u0111\u1ed9ng) sang d\u1ea1ng \u0111i\u1ec7n (t\u00edn hi\u1ec7u \u00e2m thanh) v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua c\u00e1c b\u1ed9 ph\u1eadn c\u1ea5u th\u00e0nh n\u00ean transducer, v\u00ed d\u1ee5 nh\u01b0 m\u00e0ng loa, cu\u1ed9n d\u00e2y, nam ch\u00e2m trong loa \u0111i\u1ec7n \u0111\u1ed9ng, ho\u1eb7c c\u00e1c tinh th\u1ec3 \u00e1p \u0111i\u1ec7n trong microphone.  Khi \u00e2m thanh t\u00e1c \u0111\u1ed9ng v\u00e0o transducer, n\u00f3 l\u00e0m thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i v\u1eadt l\u00fd c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn n\u00e0y, t\u1ea1o ra t\u00edn hi\u1ec7u \u0111i\u1ec7n t\u01b0\u01a1ng \u1ee9ng. Ng\u01b0\u1ee3c l\u1ea1i, khi c\u00f3 t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111i qua transducer, n\u00f3 s\u1ebd k\u00edch th\u00edch c\u00e1c b\u1ed9 ph\u1eadn n\u00e0y rung \u0111\u1ed9ng, t\u1ea1o ra \u00e2m thanh.<\/p>\n<h3>C\u00e1c lo\u1ea1i transducer \u00e2m thanh ph\u1ed5 bi\u1ebfn<\/h3>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i transducer \u00e2m thanh kh\u00e1c nhau, m\u1ed7i lo\u1ea1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ed9t m\u1ee5c \u0111\u00edch c\u1ee5 th\u1ec3. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>Microphone:<\/strong> Chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n. C\u00f3 nhi\u1ec1u lo\u1ea1i microphone kh\u00e1c nhau nh\u01b0 microphone dynamic, condenser, ribbon&#8230;<\/p>\n<\/li>\n<li>\n<p><strong>Loa:<\/strong> Chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh.  Ph\u00e2n lo\u1ea1i theo c\u1ea5u t\u1ea1o c\u00f3 loa \u0111i\u1ec7n \u0111\u1ed9ng, loa t\u0129nh \u0111i\u1ec7n, loa piezo&#8230;<\/p>\n<\/li>\n<li>\n<p><strong>Tai nghe:<\/strong> T\u01b0\u01a1ng t\u1ef1 nh\u01b0 loa, nh\u01b0ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111eo tr\u00ean tai, cung c\u1ea5p tr\u1ea3i nghi\u1ec7m nghe c\u00e1 nh\u00e2n.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ea7u ghi \u00e2m:<\/strong>  Chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh th\u00e0nh t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n kh\u00e1c nhau nh\u01b0 b\u0103ng t\u1eeb, \u0111\u0129a quang ho\u1eb7c b\u1ed9 nh\u1edb flash.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ea7u ph\u00e1t \u00e2m thanh:<\/strong> Chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u \u00e2m thanh \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh.<\/p>\n<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a transducer \u00e2m thanh<\/h3>\n<p>Transducer \u00e2m thanh \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, t\u1eeb gi\u1ea3i tr\u00ed \u0111\u1ebfn khoa h\u1ecdc k\u1ef9 thu\u1eadt:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>L\u0129nh v\u1ef1c<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Gi\u1ea3i tr\u00ed<\/td>\n<td>Ghi \u00e2m, ph\u00e1t nh\u1ea1c, xem phim, ch\u01a1i game<\/td>\n<td>Loa, tai nghe, microphone, h\u1ec7 th\u1ed1ng \u00e2m thanh s\u00e2n kh\u1ea5u<\/td>\n<\/tr>\n<tr>\n<td>Truy\u1ec1n th\u00f4ng<\/td>\n<td>Ph\u00e1t thanh, truy\u1ec1n h\u00ecnh, \u0111i\u1ec7n tho\u1ea1i<\/td>\n<td>Microphone, loa, tai nghe<\/td>\n<\/tr>\n<tr>\n<td>Y t\u1ebf<\/td>\n<td>Si\u00eau \u00e2m, \u0111o nh\u1ecbp tim, nghe tim thai<\/td>\n<td>M\u00e1y si\u00eau \u00e2m, m\u00e1y \u0111o nh\u1ecbp tim<\/td>\n<\/tr>\n<tr>\n<td>Khoa h\u1ecdc k\u1ef9 thu\u1eadt<\/td>\n<td>\u0110o \u0111\u1ea1c \u00e2m thanh, ki\u1ec3m tra v\u1eadt li\u1ec7u<\/td>\n<td>M\u00e1y \u0111o \u00e2m thanh, m\u00e1y d\u00f2 l\u1ed7i si\u00eau \u00e2m<\/td>\n<\/tr>\n<tr>\n<td>An ninh<\/td>\n<td>H\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng, gi\u00e1m s\u00e1t<\/td>\n<td>Loa, microphone<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Transducer v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh<\/h3>\n<p>Ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a transducer.  C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 d\u1ea3i t\u1ea7n s\u1ed1, \u0111\u1ed9 nh\u1ea1y, \u0111\u1ed9 m\u00e9o ti\u1ebfng, v\u00e0 tr\u1edf kh\u00e1ng \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a transducer v\u00e0 do \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh \u0111\u1ea7u ra.  Vi\u1ec7c l\u1ef1a ch\u1ecdn transducer ph\u00f9 h\u1ee3p v\u1edbi m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh t\u1ed1t nh\u1ea5t.<\/p>\n<p>T\u00f3m l\u1ea1i, transducer \u00e2m thanh l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong vi\u1ec7c ghi l\u1ea1i, t\u00e1i t\u1ea1o v\u00e0 x\u1eed l\u00fd \u00e2m thanh.  S\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00f4ng ngh\u1ec7 transducer \u0111\u00e3 \u0111\u00f3ng g\u00f3p to l\u1edbn v\u00e0o s\u1ef1 ti\u1ebfn b\u1ed9 c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p \u00e2m thanh v\u00e0 vi\u1ec5n th\u00f4ng, mang \u0111\u1ebfn cho ch\u00fang ta nh\u1eefng tr\u1ea3i nghi\u1ec7m \u00e2m thanh tuy\u1ec7t v\u1eddi h\u01a1n.  T\u1eeb vi\u1ec7c nghe nh\u1ea1c, xem phim, cho \u0111\u1ebfn giao ti\u1ebfp v\u00e0 nghi\u00ean c\u1ee9u khoa h\u1ecdc, transducer \u00e2m thanh \u0111\u1ec1u \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng v\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c2m thanh, m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi s\u1ef1 rung \u0111\u1ed9ng v\u00e0 lan truy\u1ec1n d\u01b0\u1edbi d\u1ea1ng s\u00f3ng. \u0110\u1ec3 ch\u00fang ta c\u00f3 th\u1ec3 nghe \u0111\u01b0\u1ee3c \u00e2m thanh \u0111\u00f3, ho\u1eb7c ghi l\u1ea1i v\u00e0 ph\u00e1t l\u1ea1i, c\u1ea7n c\u00f3 m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1eb7c bi\u1ec7t c\u00f3 kh\u1ea3 n\u0103ng chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng<\/p>\n","protected":false},"author":1,"featured_media":26935,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-43780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=43780"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/43780\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26935"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=43780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=43780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=43780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}