{"id":50252,"date":"2023-04-21T15:12:03","date_gmt":"2023-04-21T20:12:03","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/how-to-block-ultrasonic-sound\/"},"modified":"2025-01-21T07:13:48","modified_gmt":"2025-01-21T12:13:48","slug":"how-to-block-ultrasonic-sound","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/how-to-block-ultrasonic-sound\/","title":{"rendered":"Ch\u1eb7n Si\u00eau \u00c2m: Ph\u01b0\u01a1ng Ph\u00e1p & V\u1eadt Li\u1ec7u Hi\u1ec7u Qu\u1ea3"},"content":{"rendered":"

\u00c2m thanh si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \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. Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, vi\u1ec7c ng\u0103n ch\u1eb7n ho\u1eb7c gi\u1ea3m thi\u1ec3u s\u1ef1 lan truy\u1ec1n c\u1ee7a \u00e2m thanh si\u00eau \u00e2m l\u00e0 c\u1ea7n thi\u1ebft. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd tr\u00ecnh b\u00e0y chi ti\u1ebft v\u1ec1 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ch\u1eb7n \u00e2m thanh si\u00eau \u00e2m.<\/p>\n

V\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 \u00e2m thanh<\/h3>\n

M\u1ed9t trong nh\u1eefng c\u00e1ch ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 ch\u1eb7n \u00e2m thanh si\u00eau \u00e2m l\u00e0 s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 \u00e2m thanh. C\u00e1c v\u1eadt li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u00e2m thanh th\u00e0nh nhi\u1ec7t n\u0103ng, do \u0111\u00f3 l\u00e0m gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a s\u00f3ng \u00e2m. M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 \u00e2m thanh hi\u1ec7u qu\u1ea3 bao g\u1ed3m x\u1ed1p, len \u0111\u00e1, b\u00f4ng kho\u00e1ng, v\u00e0 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u composite \u0111\u1eb7c bi\u1ec7t.<\/p>\n\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u<\/th>\nC\u01a1 ch\u1ebf h\u1ea5p th\u1ee5<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nNh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n
X\u1ed1p<\/td>\nMa s\u00e1t kh\u00f4ng kh\u00ed trong c\u00e1c l\u1ed7 x\u1ed1p<\/td>\nGi\u00e1 th\u00e0nh r\u1ebb, d\u1ec5 thi c\u00f4ng<\/td>\nHi\u1ec7u qu\u1ea3 h\u1ea5p th\u1ee5 \u1edf t\u1ea7n s\u1ed1 cao h\u1ea1n ch\u1ebf<\/td>\n<\/tr>\n
Len \u0111\u00e1<\/td>\nMa s\u00e1t v\u00e0 rung \u0111\u1ed9ng c\u1ee7a c\u00e1c s\u1ee3i len<\/td>\n\u0110\u1ed9 b\u1ec1n cao, ch\u1ed1ng ch\u00e1y<\/td>\nKh\u00f3 thi c\u00f4ng \u1edf m\u1ed9t s\u1ed1 v\u1ecb tr\u00ed<\/td>\n<\/tr>\n
B\u00f4ng kho\u00e1ng<\/td>\nT\u01b0\u01a1ng t\u1ef1 len \u0111\u00e1<\/td>\nKh\u1ea3 n\u0103ng c\u00e1ch nhi\u1ec7t t\u1ed1t<\/td>\nC\u00f3 th\u1ec3 g\u00e2y k\u00edch \u1ee9ng da<\/td>\n<\/tr>\n
V\u1eadt li\u1ec7u composite<\/td>\nK\u1ebft h\u1ee3p nhi\u1ec1u l\u1edbp v\u1eadt li\u1ec7u kh\u00e1c nhau<\/td>\nHi\u1ec7u qu\u1ea3 h\u1ea5p th\u1ee5 cao \u1edf d\u1ea3i t\u1ea7n s\u1ed1 r\u1ed9ng<\/td>\nGi\u00e1 th\u00e0nh cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K\u1ebft c\u1ea5u c\u00e1ch \u00e2m<\/h3>\n

B\u00ean c\u1ea1nh vi\u1ec7c s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u h\u1ea5p th\u1ee5, vi\u1ec7c thi\u1ebft k\u1ebf k\u1ebft c\u1ea5u c\u00e1ch \u00e2m c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c ch\u1eb7n \u00e2m thanh si\u00eau \u00e2m. C\u00e1c k\u1ebft c\u1ea5u n\u00e0y th\u01b0\u1eddng bao g\u1ed3m nhi\u1ec1u l\u1edbp v\u1eadt li\u1ec7u kh\u00e1c nhau, k\u1ebft h\u1ee3p gi\u1eefa v\u1eadt li\u1ec7u h\u1ea5p th\u1ee5 v\u00e0 v\u1eadt li\u1ec7u ph\u1ea3n x\u1ea1 \u00e2m thanh. V\u00ed d\u1ee5, m\u1ed9t b\u1ee9c t\u01b0\u1eddng c\u00e1ch \u00e2m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p l\u1edbp b\u00ea t\u00f4ng, l\u1edbp x\u1ed1p, v\u00e0 l\u1edbp th\u1ea1ch cao. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c kho\u1ea3ng kh\u00f4ng kh\u00ed gi\u1eefa c\u00e1c l\u1edbp v\u1eadt li\u1ec7u c\u0169ng gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 c\u00e1ch \u00e2m.<\/p>\n

Kho\u1ea3ng c\u00e1ch v\u00e0 h\u01b0\u1edbng<\/h3>\n

C\u01b0\u1eddng \u0111\u1ed9 \u00e2m thanh gi\u1ea3m d\u1ea7n theo kho\u1ea3ng c\u00e1ch. Do \u0111\u00f3, vi\u1ec7c t\u0103ng kho\u1ea3ng c\u00e1ch gi\u1eefa ngu\u1ed3n ph\u00e1t si\u00eau \u00e2m v\u00e0 khu v\u1ef1c c\u1ea7n b\u1ea3o v\u1ec7 l\u00e0 m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u01b0ng hi\u1ec7u qu\u1ea3 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e2m thanh si\u00eau \u00e2m. Ngo\u00e0i ra, vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh h\u01b0\u1edbng c\u1ee7a ngu\u1ed3n ph\u00e1t c\u0169ng c\u00f3 th\u1ec3 gi\u00fap ki\u1ec3m so\u00e1t s\u1ef1 lan truy\u1ec1n c\u1ee7a \u00e2m thanh.<\/p>\n

K\u1ef9 thu\u1eadt tri\u1ec7t ti\u00eau \u00e2m thanh ch\u1ee7 \u0111\u1ed9ng<\/h3>\n

K\u1ef9 thu\u1eadt n\u00e0y s\u1eed d\u1ee5ng m\u1ed9t ngu\u1ed3n ph\u00e1t \u00e2m thanh th\u1ee9 hai \u0111\u1ec3 t\u1ea1o ra s\u00f3ng \u00e2m \u0111\u1ed1i ngh\u1ecbch v\u1edbi s\u00f3ng \u00e2m si\u00eau \u00e2m c\u1ea7n tri\u1ec7t ti\u00eau. Khi hai s\u00f3ng \u00e2m g\u1eb7p nhau, ch\u00fang s\u1ebd tri\u1ec7t ti\u00eau l\u1eabn nhau, l\u00e0m gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 \u00e2m thanh. Tuy nhi\u00ean, k\u1ef9 thu\u1eadt n\u00e0y ph\u1ee9c t\u1ea1p h\u01a1n v\u00e0 \u0111\u00f2i h\u1ecfi thi\u1ebft b\u1ecb chuy\u00ean d\u1ee5ng.<\/p>\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ch\u1eb7n \u00e2m thanh si\u00eau \u00e2m ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1, bao g\u1ed3m t\u1ea7n s\u1ed1 c\u1ee7a \u00e2m thanh, c\u01b0\u1eddng \u0111\u1ed9 \u00e2m thanh, m\u00f4i tr\u01b0\u1eddng xung quanh, v\u00e0 ng\u00e2n s\u00e1ch. B\u1eb1ng vi\u1ec7c k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p tr\u00ean, ch\u00fang ta c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 ch\u1eb7n \u00e2m thanh si\u00eau \u00e2m t\u1ed1i \u01b0u, \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 tho\u1ea3i m\u00e1i cho m\u00f4i tr\u01b0\u1eddng s\u1ed1ng v\u00e0 l\u00e0m vi\u1ec7c.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00c2m thanh si\u00eau \u00e2m, v\u1edbi t\u1ea7n s\u1ed1 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a con ng\u01b0\u1eddi, \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. Tuy nhi\u00ean, trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, vi\u1ec7c ng\u0103n ch\u1eb7n ho\u1eb7c gi\u1ea3m thi\u1ec3u s\u1ef1 lan truy\u1ec1n c\u1ee7a \u00e2m thanh si\u00eau \u00e2m l\u00e0 c\u1ea7n thi\u1ebft. B\u00e0i vi\u1ebft<\/p>\n","protected":false},"author":1,"featured_media":26475,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-50252","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\/50252","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=50252"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/50252\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/26475"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=50252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=50252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=50252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}