{"id":47044,"date":"2023-04-22T00:43:30","date_gmt":"2023-04-22T05:43:30","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-stop-infrasound\/"},"modified":"2025-01-21T07:21:50","modified_gmt":"2025-01-21T12:21:50","slug":"how-to-stop-infrasound","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-stop-infrasound\/","title":{"rendered":"Kh\u1eafc ph\u1ee5c ti\u1ebfng \u1ed3n h\u1ea1 \u00e2m hi\u1ec7u qu\u1ea3"},"content":{"rendered":"<p>H\u1ea1 \u00e2m, lo\u1ea1i s\u00f3ng \u00e2m thanh c\u00f3 t\u1ea7n s\u1ed1 th\u1ea5p d\u01b0\u1edbi ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u t\u00e1c \u0111\u1ed9ng kh\u00f3 ch\u1ecbu t\u1eeb rung \u0111\u1ed9ng \u0111\u1ebfn c\u1ea3m gi\u00e1c lo l\u1eafng. Vi\u1ec7c ki\u1ec3m so\u00e1t v\u00e0 ng\u0103n ch\u1eb7n h\u1ea1 \u00e2m l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 ngu\u1ed3n g\u1ed1c v\u00e0 \u0111\u1eb7c t\u00ednh lan truy\u1ec1n c\u1ee7a n\u00f3. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd tr\u00ecnh b\u00e0y chi ti\u1ebft c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 k\u1ef9 thu\u1eadt gi\u00fap gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a h\u1ea1 \u00e2m.<\/p>\n<h3>X\u00e1c \u0111\u1ecbnh Ngu\u1ed3n G\u1ed1c H\u1ea1 \u00c2m<\/h3>\n<p>B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong vi\u1ec7c ng\u0103n ch\u1eb7n h\u1ea1 \u00e2m l\u00e0 x\u00e1c \u0111\u1ecbnh ngu\u1ed3n g\u1ed1c c\u1ee7a n\u00f3. H\u1ea1 \u00e2m c\u00f3 th\u1ec3 ph\u00e1t ra t\u1eeb nhi\u1ec1u ngu\u1ed3n kh\u00e1c nhau, bao g\u1ed3m m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p, h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3, ph\u01b0\u01a1ng ti\u1ec7n giao th\u00f4ng, hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean nh\u01b0 gi\u00f3, s\u1ea5m s\u00e9t, v\u00e0 th\u1eadm ch\u00ed c\u1ea3 m\u1ed9t s\u1ed1 lo\u00e0i \u0111\u1ed9ng v\u1eadt. Vi\u1ec7c x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c ngu\u1ed3n g\u1ed1c gi\u00fap l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd hi\u1ec7u qu\u1ea3 nh\u1ea5t.<\/p>\n<h3>C\u00e1ch Ly Ngu\u1ed3n Ph\u00e1t<\/h3>\n<p>M\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 ng\u0103n ch\u1eb7n h\u1ea1 \u00e2m l\u00e0 c\u00e1ch ly ngu\u1ed3n ph\u00e1t. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c v\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 \u00e2m thanh, v\u00ed d\u1ee5 nh\u01b0 b\u00f4ng kho\u00e1ng, cao su \u0111\u1eb7c, ho\u1eb7c c\u00e1c t\u1ea5m panel chuy\u00ean d\u1ee5ng. Vi\u1ec7c bao b\u1ecdc ngu\u1ed3n ph\u00e1t b\u1eb1ng c\u00e1c v\u1eadt li\u1ec7u n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u l\u01b0\u1ee3ng h\u1ea1 \u00e2m ph\u00e1t ra m\u00f4i tr\u01b0\u1eddng xung quanh.<\/p>\n<h3>Ki\u1ec3m So\u00e1t \u0110\u01b0\u1eddng Truy\u1ec1n \u00c2m<\/h3>\n<p>H\u1ea1 \u00e2m c\u00f3 th\u1ec3 lan truy\u1ec1n qua kh\u00f4ng kh\u00ed, ch\u1ea5t r\u1eafn v\u00e0 ch\u1ea5t l\u1ecfng. Vi\u1ec7c ki\u1ec3m so\u00e1t \u0111\u01b0\u1eddng truy\u1ec1n \u00e2m thanh l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c ng\u0103n ch\u1eb7n h\u1ea1 \u00e2m.  M\u1ed9t s\u1ed1 bi\u1ec7n ph\u00e1p c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>S\u1eed d\u1ee5ng v\u1eadt li\u1ec7u ch\u1eafn \u00e2m:<\/strong> X\u00e2y d\u1ef1ng c\u00e1c b\u1ee9c t\u01b0\u1eddng ho\u1eb7c v\u00e1ch ng\u0103n b\u1eb1ng v\u1eadt li\u1ec7u c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 ho\u1eb7c ph\u1ea3n x\u1ea1 \u00e2m thanh.<\/li>\n<li><strong>T\u1ea1o kho\u1ea3ng tr\u1ed1ng:<\/strong> Kho\u1ea3ng tr\u1ed1ng gi\u1eefa ngu\u1ed3n ph\u00e1t v\u00e0 khu v\u1ef1c c\u1ea7n b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m thi\u1ec3u c\u01b0\u1eddng \u0111\u1ed9 h\u1ea1 \u00e2m.<\/li>\n<li><strong>\u0110i\u1ec1u ch\u1ec9nh thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng:<\/strong> Trong tr\u01b0\u1eddng h\u1ee3p h\u1ea1 \u00e2m ph\u00e1t ra t\u1eeb h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3, vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft k\u1ebf \u1ed1ng d\u1eabn v\u00e0 qu\u1ea1t gi\u00f3 c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 ph\u00e1t sinh v\u00e0 lan truy\u1ec1n h\u1ea1 \u00e2m.<\/li>\n<\/ul>\n<h3>S\u1eed d\u1ee5ng C\u00f4ng Ngh\u1ec7 Ch\u1ee7 \u0110\u1ed9ng<\/h3>\n<p>C\u00e1c c\u00f4ng ngh\u1ec7 ch\u1ee7 \u0111\u1ed9ng, nh\u01b0 h\u1ec7 th\u1ed1ng tri\u1ec7t ti\u00eau \u00e2m thanh ch\u1ee7 \u0111\u1ed9ng, c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ng\u0103n ch\u1eb7n h\u1ea1 \u00e2m. H\u1ec7 th\u1ed1ng n\u00e0y ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ph\u00e1t ra s\u00f3ng \u00e2m thanh c\u00f3 pha ng\u01b0\u1ee3c v\u1edbi s\u00f3ng h\u1ea1 \u00e2m, t\u1eeb \u0111\u00f3 tri\u1ec7t ti\u00eau l\u1eabn nhau. Tuy nhi\u00ean, vi\u1ec7c \u00e1p d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0y th\u01b0\u1eddng ph\u1ee9c t\u1ea1p v\u00e0 t\u1ed1n k\u00e9m h\u01a1n so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ee5 \u0111\u1ed9ng.<\/p>\n<h3>So S\u00e1nh C\u00e1c Ph\u01b0\u01a1ng Ph\u00e1p Ng\u0103n Ch\u1eb7n H\u1ea1 \u00c2m<\/h3>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Ph\u01b0\u01a1ng Ph\u00e1p<\/th>\n<th>\u01afu \u0110i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0110i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u00e1ch Ly Ngu\u1ed3n Ph\u00e1t<\/td>\n<td>Hi\u1ec7u qu\u1ea3 cao, d\u1ec5 th\u1ef1c hi\u1ec7n<\/td>\n<td>C\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb<\/td>\n<\/tr>\n<tr>\n<td>Ki\u1ec3m So\u00e1t \u0110\u01b0\u1eddng Truy\u1ec1n \u00c2m<\/td>\n<td>Linh ho\u1ea1t, \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c cho nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p<\/td>\n<td>Hi\u1ec7u qu\u1ea3 ph\u1ee5 thu\u1ed9c v\u00e0o v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf<\/td>\n<\/tr>\n<tr>\n<td>C\u00f4ng Ngh\u1ec7 Ch\u1ee7 \u0110\u1ed9ng<\/td>\n<td>Tri\u1ec7t ti\u00eau h\u1ea1 \u00e2m hi\u1ec7u qu\u1ea3<\/td>\n<td>Chi ph\u00ed cao, ph\u1ee9c t\u1ea1p trong l\u1eafp \u0111\u1eb7t v\u00e0 v\u1eadn h\u00e0nh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Vi\u1ec7c ng\u0103n ch\u1eb7n h\u1ea1 \u00e2m l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh \u0111\u00f2i h\u1ecfi s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p v\u00e0 k\u1ef9 thu\u1eadt kh\u00e1c nhau. Vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o ngu\u1ed3n g\u1ed1c, c\u01b0\u1eddng \u0111\u1ed9, v\u00e0 m\u00f4i tr\u01b0\u1eddng lan truy\u1ec1n c\u1ee7a h\u1ea1 \u00e2m.  Qua vi\u1ec7c \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p n\u00eau tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c c\u1ee7a h\u1ea1 \u00e2m \u0111\u1ebfn s\u1ee9c kh\u1ecfe v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1ed1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u1ea1 \u00e2m, lo\u1ea1i s\u00f3ng \u00e2m thanh c\u00f3 t\u1ea7n s\u1ed1 th\u1ea5p d\u01b0\u1edbi ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, c\u00f3 th\u1ec3 g\u00e2y ra nhi\u1ec1u t\u00e1c \u0111\u1ed9ng kh\u00f3 ch\u1ecbu t\u1eeb rung \u0111\u1ed9ng \u0111\u1ebfn c\u1ea3m gi\u00e1c lo l\u1eafng. Vi\u1ec7c ki\u1ec3m so\u00e1t v\u00e0 ng\u0103n ch\u1eb7n h\u1ea1 \u00e2m l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi s\u1ef1 hi\u1ec3u bi\u1ebft v\u1ec1 ngu\u1ed3n g\u1ed1c<\/p>\n","protected":false},"author":1,"featured_media":26461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-47044","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\/47044","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=47044"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/47044\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26461"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=47044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=47044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=47044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}