{"id":52692,"date":"2023-04-21T12:35:48","date_gmt":"2023-04-21T17:35:48","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/diy-bone-conduction-transducer\/"},"modified":"2025-01-21T07:07:34","modified_gmt":"2025-01-21T12:07:34","slug":"diy-bone-conduction-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/diy-bone-conduction-transducer\/","title":{"rendered":"T\u1ef1 ch\u1ebf thi\u1ebft b\u1ecb d\u1eabn truy\u1ec1n \u00e2m qua x\u01b0\u01a1ng"},"content":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i d\u1eabn truy\u1ec1n x\u01b0\u01a1ng (bone conduction transducer) c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 mang t\u00ednh gi\u00e1o d\u1ee5c, cho ph\u00e9p b\u1ea1n t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd \u00e2m thanh v\u00e0 rung \u0111\u1ed9ng. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb t\u1ef1 ch\u1ebf th\u01b0\u1eddng kh\u00f3 s\u00e1nh b\u1eb1ng c\u00e1c s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n qua c\u00e1c b\u01b0\u1edbc c\u01a1 b\u1ea3n \u0111\u1ec3 t\u1ea1o ra m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i d\u1eabn truy\u1ec1n x\u01b0\u01a1ng \u0111\u01a1n gi\u1ea3n.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a d\u1eabn truy\u1ec1n x\u01b0\u01a1ng<\/h3>\n<p>D\u1eabn truy\u1ec1n x\u01b0\u01a1ng ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch truy\u1ec1n rung \u0111\u1ed9ng \u00e2m thanh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn x\u01b0\u01a1ng s\u1ecd, b\u1ecf qua m\u00e0ng nh\u0129. Rung \u0111\u1ed9ng n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ebfn \u1ed1c tai, n\u01a1i ch\u00fang \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh t\u00edn hi\u1ec7u \u0111i\u1ec7n v\u00e0 \u0111\u01b0\u1ee3c n\u00e3o b\u1ed9 nh\u1eadn bi\u1ebft l\u00e0 \u00e2m thanh.<\/p>\n<h3>V\u1eadt li\u1ec7u c\u1ea7n thi\u1ebft<\/h3>\n<p>\u0110\u1ec3 ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i d\u1eabn truy\u1ec1n x\u01b0\u01a1ng, b\u1ea1n s\u1ebd c\u1ea7n c\u00e1c v\u1eadt li\u1ec7u sau:<\/p>\n<ul>\n<li>M\u1ed9t b\u1ed9 rung (transducer) &#8211; c\u00f3 th\u1ec3 l\u1ea5y t\u1eeb tai nghe c\u0169, \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng c\u0169 ho\u1eb7c mua m\u1edbi.<\/li>\n<li>V\u1ecf nh\u1ef1a ho\u1eb7c kim lo\u1ea1i nh\u1ecf \u0111\u1ec3 ch\u1ee9a b\u1ed9 rung.<\/li>\n<li>D\u00e2y \u0111i\u1ec7n.<\/li>\n<li>Jack c\u1eafm 3.5mm.<\/li>\n<li>Keo d\u00e1n.<\/li>\n<li>B\u0103ng d\u00ednh hai m\u1eb7t.<\/li>\n<\/ul>\n<h3>C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n<\/h3>\n<ol>\n<li>Th\u00e1o r\u1eddi b\u1ed9 rung t\u1eeb tai nghe ho\u1eb7c \u0111i\u1ec7n tho\u1ea1i c\u0169. C\u1ea9n th\u1eadn \u0111\u1ec3 kh\u00f4ng l\u00e0m h\u1ecfng c\u00e1c linh ki\u1ec7n.<\/li>\n<li>G\u1eafn b\u1ed9 rung v\u00e0o b\u00ean trong v\u1ecf nh\u1ef1a ho\u1eb7c kim lo\u1ea1i b\u1eb1ng keo d\u00e1n. \u0110\u1ea3m b\u1ea3o b\u1ed9 rung \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh ch\u1eafc ch\u1eafn.<\/li>\n<li>H\u00e0n d\u00e2y \u0111i\u1ec7n v\u00e0o hai \u0111\u1ea7u c\u1ef1c c\u1ee7a b\u1ed9 rung.<\/li>\n<li>H\u00e0n \u0111\u1ea7u c\u00f2n l\u1ea1i c\u1ee7a d\u00e2y \u0111i\u1ec7n v\u00e0o jack c\u1eafm 3.5mm.<\/li>\n<li>Ki\u1ec3m tra k\u1ebft n\u1ed1i b\u1eb1ng c\u00e1ch c\u1eafm jack c\u1eafm v\u00e0o \u0111i\u1ec7n tho\u1ea1i ho\u1eb7c m\u00e1y t\u00ednh v\u00e0 ph\u00e1t nh\u1ea1c. N\u1ebfu b\u1ed9 rung ho\u1ea1t \u0111\u1ed9ng, b\u1ea1n s\u1ebd c\u1ea3m th\u1ea5y rung \u0111\u1ed9ng khi ch\u1ea1m v\u00e0o v\u1ecf.<\/li>\n<li>D\u00e1n v\u1ecf nh\u1ef1a ho\u1eb7c kim lo\u1ea1i l\u00ean m\u1ed9t b\u1ec1 m\u1eb7t c\u1ee9ng, ph\u1eb3ng nh\u01b0 m\u1eb7t b\u00e0n b\u1eb1ng b\u0103ng d\u00ednh hai m\u1eb7t.  B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u0103ng \u0111\u00f4 \u0111\u1ec3 g\u1eafn thi\u1ebft b\u1ecb l\u00ean \u0111\u1ea7u.<\/li>\n<\/ol>\n<h3>L\u1ef1a ch\u1ecdn b\u1ed9 rung<\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 rung ph\u00f9 h\u1ee3p r\u1ea5t quan tr\u1ecdng. C\u00f3 nhi\u1ec1u lo\u1ea1i b\u1ed9 rung kh\u00e1c nhau tr\u00ean th\u1ecb tr\u01b0\u1eddng, m\u1ed7i lo\u1ea1i c\u00f3 \u0111\u1eb7c t\u00ednh ri\u00eang. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y so s\u00e1nh m\u1ed9t s\u1ed1 lo\u1ea1i b\u1ed9 rung ph\u1ed5 bi\u1ebfn:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Lo\u1ea1i b\u1ed9 rung<\/th>\n<th>T\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng<\/th>\n<th>K\u00edch th\u01b0\u1edbc<\/th>\n<th>C\u00f4ng su\u1ea5t<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ed9 rung \u0111i\u1ec7n t\u1eeb<\/td>\n<td>100Hz &#8211; 5kHz<\/td>\n<td>Nh\u1ecf<\/td>\n<td>Th\u1ea5p<\/td>\n<td>\u0110i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, m\u00e1y nh\u1eafn tin<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 rung \u00e1p \u0111i\u1ec7n (Piezoelectric)<\/td>\n<td>2kHz &#8211; 20kHz<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Trung b\u00ecnh<\/td>\n<td>Loa, \u0111\u1ed3ng h\u1ed3 b\u00e1o th\u1ee9c<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 rung qu\u00e1n t\u00ednh (Inertial)<\/td>\n<td>20Hz &#8211; 20kHz<\/td>\n<td>L\u1edbn<\/td>\n<td>Cao<\/td>\n<td>Tai nghe d\u1eabn truy\u1ec1n x\u01b0\u01a1ng, thi\u1ebft b\u1ecb rung c\u00f4ng nghi\u1ec7p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/h3>\n<p>N\u1ebfu b\u1ed9 chuy\u1ec3n \u0111\u1ed5i kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, h\u00e3y ki\u1ec3m tra l\u1ea1i c\u00e1c k\u1ebft n\u1ed1i d\u00e2y \u0111i\u1ec7n v\u00e0 \u0111\u1ea3m b\u1ea3o b\u1ed9 rung \u0111\u01b0\u1ee3c g\u1eafn ch\u1eafc ch\u1eafn.  B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 th\u1eed s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 rung kh\u00e1c.<\/p>\n<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i d\u1eabn truy\u1ec1n x\u01b0\u01a1ng c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t tr\u1ea3i nghi\u1ec7m th\u00fa v\u1ecb, nh\u01b0ng ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh th\u01b0\u1eddng kh\u00f4ng th\u1ec3 so s\u00e1nh v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i. Tuy nhi\u00ean, \u0111\u00e2y l\u00e0 m\u1ed9t c\u00e1ch tuy\u1ec7t v\u1eddi \u0111\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00f4ng ngh\u1ec7 d\u1eabn truy\u1ec1n x\u01b0\u01a1ng v\u00e0 \u00e1p d\u1ee5ng ki\u1ebfn th\u1ee9c v\u00e0o th\u1ef1c t\u1ebf.  N\u1ebfu b\u1ea1n mu\u1ed1n tr\u1ea3i nghi\u1ec7m \u00e2m thanh ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n, n\u00ean \u0111\u1ea7u t\u01b0 v\u00e0o m\u1ed9t b\u1ed9 tai nghe d\u1eabn truy\u1ec1n x\u01b0\u01a1ng chuy\u00ean d\u1ee5ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i d\u1eabn truy\u1ec1n x\u01b0\u01a1ng (bone conduction transducer) c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t d\u1ef1 \u00e1n th\u00fa v\u1ecb v\u00e0 mang t\u00ednh gi\u00e1o d\u1ee5c, cho ph\u00e9p b\u1ea1n t\u00ecm hi\u1ec3u v\u1ec1 nguy\u00ean l\u00fd \u00e2m thanh v\u00e0 rung \u0111\u1ed9ng. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a thi\u1ebft<\/p>\n","protected":false},"author":1,"featured_media":26942,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-52692","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\/52692","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=52692"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/52692\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26942"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=52692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=52692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=52692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}