{"id":44260,"date":"2023-04-25T16:17:02","date_gmt":"2023-04-25T21:17:02","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-a-sound-generator\/"},"modified":"2025-01-21T07:28:24","modified_gmt":"2025-01-21T12:28:24","slug":"what-is-a-sound-generator","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-a-sound-generator\/","title":{"rendered":"Kh\u00e1m Ph\u00e1 M\u00e1y Ph\u00e1t \u00c2m Thanh: Nguy\u00ean L\u00fd &#038; \u1ee8ng D\u1ee5ng"},"content":{"rendered":"<p>\u00c2m thanh l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta. T\u1eeb ti\u1ebfng chim h\u00f3t bu\u1ed5i s\u00e1ng \u0111\u1ebfn ti\u1ebfng nh\u1ea1c du d\u01b0\u01a1ng, \u00e2m thanh bao quanh v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u00fang ta theo nhi\u1ec1u c\u00e1ch. Nh\u01b0ng \u00e2m thanh \u0111\u01b0\u1ee3c t\u1ea1o ra nh\u01b0 th\u1ebf n\u00e0o? \u0110\u00f3 ch\u00ednh l\u00e0 vai tr\u00f2 c\u1ee7a b\u1ed9 t\u1ea1o \u00e2m thanh.  M\u1ed9t b\u1ed9 t\u1ea1o \u00e2m thanh, \u0111\u01a1n gi\u1ea3n m\u00e0 n\u00f3i, l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra c\u00e1c lo\u1ea1i s\u00f3ng \u00e2m kh\u00e1c nhau. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o t\u00ecm hi\u1ec3u v\u1ec1 b\u1ed9 t\u1ea1o \u00e2m thanh, c\u00e1c lo\u1ea1i, nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang.<\/p>\n<h3>C\u00e1c lo\u1ea1i b\u1ed9 t\u1ea1o \u00e2m thanh<\/h3>\n<p>B\u1ed9 t\u1ea1o \u00e2m thanh c\u00f3 nhi\u1ec1u lo\u1ea1i, m\u1ed7i lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nh\u1eefng nguy\u00ean l\u00fd kh\u00e1c nhau v\u00e0 t\u1ea1o ra nh\u1eefng lo\u1ea1i \u00e2m thanh \u0111\u1eb7c tr\u01b0ng.  M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Lo\u1ea1i b\u1ed9 t\u1ea1o \u00e2m thanh<\/th>\n<th>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/th>\n<th>V\u00ed d\u1ee5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110i\u1ec7n t\u1eed<\/td>\n<td>S\u1eed d\u1ee5ng m\u1ea1ch \u0111i\u1ec7n t\u1eed \u0111\u1ec3 t\u1ea1o ra s\u00f3ng \u00e2m<\/td>\n<td>Loa, synthesizer, m\u00e1y t\u00ednh<\/td>\n<\/tr>\n<tr>\n<td>C\u01a1 h\u1ecdc<\/td>\n<td>D\u1ef1a tr\u00ean s\u1ef1 rung \u0111\u1ed9ng c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn c\u01a1 h\u1ecdc<\/td>\n<td>\u0110\u00e0n guitar, tr\u1ed1ng, k\u00e8n<\/td>\n<\/tr>\n<tr>\n<td>Kh\u00ed n\u00e9n<\/td>\n<td>S\u1eed d\u1ee5ng kh\u00ed n\u00e9n \u0111\u1ec3 t\u1ea1o ra \u00e2m thanh<\/td>\n<td>C\u00f2i h\u01a1i, s\u00e1o<\/td>\n<\/tr>\n<tr>\n<td>Si\u00eau \u00e2m<\/td>\n<td>S\u1eed d\u1ee5ng t\u1ea7n s\u1ed1 si\u00eau \u00e2m \u0111\u1ec3 t\u1ea1o ra s\u00f3ng \u00e2m thanh, \u0111\u00f4i khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00e0 y t\u1ebf<\/td>\n<td>M\u00e1y si\u00eau \u00e2m, thi\u1ebft b\u1ecb l\u00e0m s\u1ea1ch b\u1eb1ng si\u00eau \u00e2m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng<\/h3>\n<p>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 t\u1ea1o \u00e2m thanh d\u1ef1a tr\u00ean vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1eeb d\u1ea1ng n\u00e0y sang d\u1ea1ng n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh. V\u00ed d\u1ee5, trong loa, n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc c\u1ee7a m\u00e0ng loa, l\u00e0m rung \u0111\u1ed9ng kh\u00f4ng kh\u00ed v\u00e0 t\u1ea1o ra s\u00f3ng \u00e2m.  T\u01b0\u01a1ng t\u1ef1, trong \u0111\u00e0n guitar, n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc t\u1eeb vi\u1ec7c g\u1ea3y d\u00e2y \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh.<\/p>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a b\u1ed9 t\u1ea1o \u00e2m thanh<\/h3>\n<p>B\u1ed9 t\u1ea1o \u00e2m thanh c\u00f3 v\u00f4 s\u1ed1 \u1ee9ng d\u1ee5ng trong cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i.  T\u1eeb gi\u1ea3i tr\u00ed (nh\u1ea1c c\u1ee5, loa, tai nghe) \u0111\u1ebfn truy\u1ec1n th\u00f4ng (c\u00f2i b\u00e1o \u0111\u1ed9ng, chu\u00f4ng \u0111i\u1ec7n tho\u1ea1i), y t\u1ebf (m\u00e1y si\u00eau \u00e2m, thi\u1ebft b\u1ecb tr\u1ecb li\u1ec7u) v\u00e0 c\u00f4ng nghi\u1ec7p (thi\u1ebft b\u1ecb ki\u1ec3m tra si\u00eau \u00e2m, m\u00e1y h\u00e0n si\u00eau \u00e2m). V\u00ed d\u1ee5, trong l\u0129nh v\u1ef1c y t\u1ebf, m\u00e1y si\u00eau \u00e2m s\u1eed d\u1ee5ng s\u00f3ng si\u00eau \u00e2m \u0111\u1ec3 t\u1ea1o ra h\u00ecnh \u1ea3nh b\u00ean trong c\u01a1 th\u1ec3, h\u1ed7 tr\u1ee3 ch\u1ea9n \u0111o\u00e1n b\u1ec7nh. Trong c\u00f4ng nghi\u1ec7p, c\u00e1c thi\u1ebft b\u1ecb l\u00e0m s\u1ea1ch b\u1eb1ng si\u00eau \u00e2m s\u1eed d\u1ee5ng s\u00f3ng si\u00eau \u00e2m \u0111\u1ec3 lo\u1ea1i b\u1ecf b\u1ee5i b\u1ea9n v\u00e0 t\u1ea1p ch\u1ea5t kh\u1ecfi c\u00e1c v\u1eadt th\u1ec3.<\/p>\n<h3>B\u1ed9 t\u1ea1o \u00e2m thanh si\u00eau \u00e2m<\/h3>\n<p>B\u1ed9 t\u1ea1o \u00e2m thanh si\u00eau \u00e2m t\u1ea1o ra s\u00f3ng \u00e2m c\u00f3 t\u1ea7n s\u1ed1 cao h\u01a1n ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi.  Ch\u00fang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf \u0111\u1ebfn c\u00f4ng nghi\u1ec7p.  M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn bao g\u1ed3m: l\u00e0m s\u1ea1ch, h\u00e0n, ki\u1ec3m tra v\u1eadt li\u1ec7u v\u00e0 \u0111i\u1ec1u tr\u1ecb y t\u1ebf.<\/p>\n<p>T\u00f3m l\u1ea1i, b\u1ed9 t\u1ea1o \u00e2m thanh l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng trong nhi\u1ec1u kh\u00eda c\u1ea1nh c\u1ee7a cu\u1ed9c s\u1ed1ng hi\u1ec7n \u0111\u1ea1i. S\u1ef1 \u0111a d\u1ea1ng v\u1ec1 lo\u1ea1i h\u00ecnh v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng cho ph\u00e9p ch\u00fang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong r\u1ea5t nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb gi\u1ea3i tr\u00ed \u0111\u1ebfn y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p. Hi\u1ec3u r\u00f5 v\u1ec1 b\u1ed9 t\u1ea1o \u00e2m thanh kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta \u0111\u00e1nh gi\u00e1 cao c\u00f4ng ngh\u1ec7 xung quanh m\u00e0 c\u00f2n m\u1edf ra nh\u1eefng c\u01a1 h\u1ed9i m\u1edbi cho s\u1ef1 ph\u00e1t tri\u1ec3n v\u00e0 \u1ee9ng d\u1ee5ng trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c2m thanh l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y c\u1ee7a ch\u00fang ta. T\u1eeb ti\u1ebfng chim h\u00f3t bu\u1ed5i s\u00e1ng \u0111\u1ebfn ti\u1ebfng nh\u1ea1c du d\u01b0\u01a1ng, \u00e2m thanh bao quanh v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u00fang ta theo nhi\u1ec1u c\u00e1ch. Nh\u01b0ng \u00e2m thanh \u0111\u01b0\u1ee3c t\u1ea1o ra nh\u01b0 th\u1ebf n\u00e0o? \u0110\u00f3 ch\u00ednh l\u00e0 vai tr\u00f2 c\u1ee7a<\/p>\n","protected":false},"author":1,"featured_media":24655,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44260","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\/44260","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=44260"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44260\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/24655"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44260"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44260"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}