{"id":48844,"date":"2023-04-21T22:57:00","date_gmt":"2023-04-22T03:57:00","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-make-a-sound-transducer\/"},"modified":"2025-01-21T07:17:30","modified_gmt":"2025-01-21T12:17:30","slug":"how-to-make-a-sound-transducer","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-make-a-sound-transducer\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn ch\u1ebf t\u1ea1o b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh"},"content":{"rendered":"

\u00c2m thanh bao quanh ch\u00fang ta, t\u1eeb ti\u1ebfng chim h\u00f3t l\u00edu lo \u0111\u1ebfn ti\u1ebfng xe c\u1ed9 \u1ed3n \u00e0o. \u0110\u1ec3 ghi l\u1ea1i v\u00e0 t\u00e1i t\u1ea1o l\u1ea1i nh\u1eefng \u00e2m thanh n\u00e0y, ch\u00fang ta c\u1ea7n \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh sang d\u1ea1ng t\u00edn hi\u1ec7u \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, g\u1ecdi l\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh hay transducer. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n c\u00e1ch l\u00e0m m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh \u0111\u01a1n gi\u1ea3n.<\/p>\n

Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh<\/h3>\n

B\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng. M\u1ed9t s\u1ed1 lo\u1ea1i d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n, bi\u1ebfn \u0111\u1ed5i \u00e1p l\u1ef1c c\u01a1 h\u1ecdc th\u00e0nh \u0111i\u1ec7n \u00e1p v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. M\u1ed9t s\u1ed1 kh\u00e1c ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd \u0111i\u1ec7n \u0111\u1ed9ng, s\u1eed d\u1ee5ng cu\u1ed9n d\u00e2y v\u00e0 nam ch\u00e2m \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc c\u1ee7a s\u00f3ng \u00e2m v\u00e0 n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n c\u1ee7a t\u00edn hi\u1ec7u \u00e2m thanh.<\/p>\n

C\u00e1c lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh ph\u1ed5 bi\u1ebfn<\/h3>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh kh\u00e1c nhau, m\u1ed7i lo\u1ea1i c\u00f3 \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m ri\u00eang. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n\n\n\n\n\n
Lo\u1ea1i<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n
Microphone \u0111i\u1ec7n \u0111\u1ed9ng<\/td>\nGi\u00e1 th\u00e0nh r\u1ebb, \u0111\u1ed9 b\u1ec1n cao<\/td>\n\u0110\u1ed9 nh\u1ea1y k\u00e9m h\u01a1n microphone t\u1ee5 \u0111i\u1ec7n<\/td>\nLoa karaoke, h\u1ec7 th\u1ed1ng PA<\/td>\n<\/tr>\n
Microphone t\u1ee5 \u0111i\u1ec7n<\/td>\n\u0110\u1ed9 nh\u1ea1y cao, \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 r\u1ed9ng<\/td>\nGi\u00e1 th\u00e0nh cao, d\u1ec5 b\u1ecb h\u1ecfng do \u0111\u1ed9 \u1ea9m<\/td>\nThu \u00e2m chuy\u00ean nghi\u1ec7p<\/td>\n<\/tr>\n
Loa \u0111i\u1ec7n \u0111\u1ed9ng<\/td>\nHi\u1ec7u su\u1ea5t cao, gi\u00e1 th\u00e0nh r\u1ebb<\/td>\nK\u00edch th\u01b0\u1edbc l\u1edbn, kh\u00f3 mini h\u00f3a<\/td>\nH\u1ec7 th\u1ed1ng \u00e2m thanh l\u1edbn<\/td>\n<\/tr>\n
Loa \u00e1p \u0111i\u1ec7n<\/td>\nK\u00edch th\u01b0\u1edbc nh\u1ecf, d\u1ec5 t\u00edch h\u1ee3p v\u00e0o thi\u1ebft b\u1ecb<\/td>\nD\u1ea3i t\u1ea7n s\u1ed1 h\u1eb9p, ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh k\u00e9m<\/td>\nLoa trong \u0111i\u1ec7n tho\u1ea1i, \u0111\u1ed3 ch\u01a1i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh \u0111\u01a1n gi\u1ea3n<\/h3>\n

Ch\u00fang ta s\u1ebd ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh \u0111\u01a1n gi\u1ea3n s\u1eed d\u1ee5ng nam ch\u00e2m v\u00e0 cu\u1ed9n d\u00e2y.<\/p>\n

V\u1eadt li\u1ec7u c\u1ea7n chu\u1ea9n b\u1ecb:<\/h4>\n
    \n
  • Nam ch\u00e2m nh\u1ecf h\u00ecnh tr\u1ee5<\/li>\n
  • Cu\u1ed9n d\u00e2y \u0111\u1ed3ng m\u1ecfng<\/li>\n
  • M\u00e0ng loa (c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng gi\u1ea5y m\u1ecfng ho\u1eb7c m\u00e0ng nh\u1ef1a)<\/li>\n
  • H\u1ed9p nh\u1ecf (c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u1ed9p nh\u1ef1a ho\u1eb7c h\u1ed9p g\u1ed7)<\/li>\n
  • D\u00e2y d\u1eabn<\/li>\n
  • Keo d\u00e1n<\/li>\n<\/ul>\n

    C\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n:<\/h4>\n
      \n
    1. D\u00e1n nam ch\u00e2m v\u00e0o \u0111\u00e1y h\u1ed9p.<\/li>\n
    2. Qu\u1ea5n cu\u1ed9n d\u00e2y \u0111\u1ed3ng quanh m\u1ed9t v\u1eadt h\u00ecnh tr\u1ee5 nh\u1ecf (v\u00ed d\u1ee5 nh\u01b0 b\u00fat ch\u00ec) \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t cu\u1ed9n d\u00e2y. \u0110\u1ea3m b\u1ea3o \u0111\u1ec3 l\u1ea1i hai \u0111\u1ea7u d\u00e2y d\u1eabn \u0111\u1ee7 d\u00e0i.<\/li>\n
    3. D\u00e1n c\u1ed1 \u0111\u1ecbnh cu\u1ed9n d\u00e2y v\u00e0o h\u1ed9p sao cho nam ch\u00e2m n\u1eb1m b\u00ean trong cu\u1ed9n d\u00e2y nh\u01b0ng kh\u00f4ng ch\u1ea1m v\u00e0o.<\/li>\n
    4. C\u1eaft m\u00e0ng loa th\u00e0nh h\u00ecnh tr\u00f2n v\u00e0 d\u00e1n v\u00e0o m\u1ed9t \u0111\u1ea7u c\u1ee7a h\u1ed9p, che ph\u1ee7 l\u00ean cu\u1ed9n d\u00e2y.<\/li>\n
    5. H\u00e0n hai \u0111\u1ea7u d\u00e2y d\u1eabn c\u1ee7a cu\u1ed9n d\u00e2y v\u00e0o hai \u0111\u1ea7u d\u00e2y k\u1ebft n\u1ed1i.<\/li>\n<\/ol>\n

      Ki\u1ec3m tra b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh<\/h3>\n

      K\u1ebft n\u1ed1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh v\u1edbi m\u1ed9t amplifier v\u00e0 ngu\u1ed3n \u00e2m thanh. Khi ph\u00e1t nh\u1ea1c, m\u00e0ng loa s\u1ebd rung \u0111\u1ed9ng t\u1ea1o ra \u00e2m thanh. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i n\u00e0y nh\u01b0 m\u1ed9t microphone \u0111\u01a1n gi\u1ea3n b\u1eb1ng c\u00e1ch k\u1ebft n\u1ed1i n\u00f3 v\u1edbi m\u1ed9t b\u1ed9 khu\u1ebfch \u0111\u1ea1i \u00e2m thanh.<\/p>\n

      Vi\u1ec7c t\u1ef1 ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh kh\u00f4ng ch\u1ec9 gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 m\u00e0 c\u00f2n mang l\u1ea1i tr\u1ea3i nghi\u1ec7m th\u00fa v\u1ecb. Tuy nhi\u00ean, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i t\u1ef1 ch\u1ebf t\u1ea1o th\u01b0\u1eddng c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh h\u1ea1n ch\u1ebf so v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m th\u01b0\u01a1ng m\u1ea1i. Hy v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 cung c\u1ea5p cho b\u1ea1n nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch ch\u1ebf t\u1ea1o m\u1ed9t b\u1ed9 chuy\u1ec3n \u0111\u1ed5i \u00e2m thanh \u0111\u01a1n gi\u1ea3n.<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u00c2m thanh bao quanh ch\u00fang ta, t\u1eeb ti\u1ebfng chim h\u00f3t l\u00edu lo \u0111\u1ebfn ti\u1ebfng xe c\u1ed9 \u1ed3n \u00e0o. \u0110\u1ec3 ghi l\u1ea1i v\u00e0 t\u00e1i t\u1ea1o l\u1ea1i nh\u1eefng \u00e2m thanh n\u00e0y, ch\u00fang ta c\u1ea7n \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh sang d\u1ea1ng t\u00edn hi\u1ec7u \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, g\u1ecdi l\u00e0 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i<\/p>\n","protected":false},"author":1,"featured_media":24648,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-48844","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\/48844","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=48844"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/48844\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/24648"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=48844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=48844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=48844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}